Just make sure your vehicle and towball setup can handle that amount of hitch weight. If it cant you will need to move the weight closer to the trailer axle
@@sunofpeter2it is, but only if your trailer can handle it. You could break the tongue or your suspension might not be stiff enough, causing it to bottom out. There are different size trailers with different weight capacities, so it's really simple: know your trailer, and don't try to haul anything too big. Then, you can always use this technique.
@@CrawlerMedia I got yah. I have watched the demo with the same set up( models on a treadmill) and the load was placed further back and the trailer stable.
I transport a lot of small equipment for my work ( mini excavator, Bobcat etc) and it all depends on which truck and trailer combo I'm using, but I generally try to keep the majority of the weight over the dual axles on the trailer, but if I can't, then I always put the load towards the front of the trailer to avoid losing control.
None of it matters. Weight is weight and doesn't matter how far forward or back it is. Don't do 65 on the highway while pulling a trailer like you shouldn't be anyway and there's no problem or risk at all.
Its actually better to put the load above the wheels of the trailer cuze putting it all the way forward could take your front wheels up and your steering could cause problems
Then you have too big a load for the vehicle to handle anyway. If the front end lifts that high, you also lose the effectiveness of your brakes. Get a bigger truck. But people don't.
If you need to haul a skid steer maybe but for something that isn't so heavy you want in the front of the trailer. If it's a razor you actually have then I would put over the trailer tires but a gold cart or something similar you can also put to the front.These toys aren't accurate representations but it gets the just of it.
What all of you are failing to notice here is that UTVs are back heavy! The majority of the weight on 99% of the UTVs on the market are in the rear. By having the Rzr as far forward on the trailer as possible it is putting the majority of the weight over the trailer axles. If you center your UTV you are putting more of the weight to the rear of the trailer and that is bad. UNLESS, you back your UTV on and then in that case your going to want to try and get it more towards the rear of the trailer. Know what your towing is one of the most important aspects of towing.
This is crazy, my grandfather father actually taught me to ALWAYS load the heavier weight in the front of a trailer to keep it from walking now I see exactly what he meant
@@BemTeViOficial Algumas pessoas têm o hábito de comentar em seu próprio idioma, quer os outros entendam ou não. Eles nem se importam em usar um tradutor.
@@prysp we usually have a option to translate to English right below the comment so we can read it. I know I didn’t translate mine but I think it should work for other languages too.
you should more so have it directly over the tires of the trailer so you have full control. more weight in back of trailer means your back of the truck is lighter, more in the front of the trailer, than the trucks back is heavier and the front of the truck won't have much control for steering.
Yes, this is why they have you strap it in place. The weight matters though. Here is what google has to say: "Following the 60/40 rule when loading a trailer is vitally important for safe towing. The best way to load for proper weight distribution is to start with the largest and heaviest items. Place heavy cargo in the center of the trailer, just forward of the axle.
over the axles is right, than control the weight on the trailer hitch...the rear axles of the car is important for stability, but the steering axles needs weight too
I don't know anything about towing but I imagine it's a good ideea to keep the weight between two axles. Not on the axles but between the axles. Anything that is not between the wheels of the car pushes from the exterior and the direction of the force is inverted cos of lever effect, while pushing right it pushes front to the left. And exterior in front pushes the rear in opposite direction so to make it stable ... between axles
It is very correct, the demonstration is not quite good here because with toys you dont have effects that have with heavy weight. If you put the load completely front as demonstrated it will lift the front part of the car and put a lot of weight on the back which will stress the suspension and on top of that you lose traction with your front tires so in some conditions you might not even be able to steer. This is different from car to car, it might not be so tragic on a ford raptor but on smaller cars it’s very dangerous! Keep the weight in the middle.
@@grosucristi6599 lever effect. The engine is far away in the front. You need a lot of weight on towing hook to lift the front. And there can't be a lot cos ... lever effect... The weight is closer to trailer axle then hook. So logically ... not on the trailer axles is best but in front of them. Btw we are talking about center of mass. To have the center of mass in front of the axle you don't need the entire load in front of the axle
the weight in the back of the trailer takes traction from the back of the truck making it harder to correct, Thats very useful information especially for truckers
Had an employee at my old job that loaded the back of trailers with heavy equipment because he swore it "saved time". We warned him but he said "BS". He lost his job after he jackknifed on the highway in high winds and destroyed our skid steer.
If you MUST load to the rear, dial up the gain on your trailer brakes. Make sure the trailer brakes apply way before the vehicle brakes apply. This can also save you in a tail-wag situation due to high winds. If the trailer gets wagging back there, grab the manual trailer application lever and get things pulled straight again. When you are out of those situations remember to return your trailer brake gain back to normal driving setting. Always load the trailer hitch level, when in tow and loaded. And, You can still get in a dangerous tail wag situation, even with load leveler bars and slider tension bar on the hitch.
i agree... for sure it will behave difrent when the truck is actuall the 1 pulling the trailer .. but wht he is showing here is both the truck and the trailer is towed
You cargo should be evenly weighed over the trailer axel with about 10% tongue weight. Too much like you recommend squats the rear of the tow vehicle and raises the front. This lessens the drivers visibility but more importantly it reduces from tire traction so steering and braking become more difficult.
Also accelerate, instead of braking if you want to correct the swinging by a manouver you regretted instantly. E.g. steering too harshly to make room for an ambulance..
It’s better to have the weight over the axels because if you have it on the tongue/front of the trailer your putting all that weight on the trucks rear end.
Having grown up in OZ it's really common sense. Plus read the car manual, it'll tell you all about how to load a trailer. The number of times you can tell someone didn't read the manual and spec the car for the trailer when on a country drive is scary.
You can't just say this with no reguard for tongue weight! Cars have ideal and maximum trailering tongue weight ratings. This is irresistible, if you overload the hitch tongue you lose steering control or worse and just have a different kind of accident
Pro tip. If your trailer starts to sway like that, do not panic and accelerate! I know it seems counter intuitive to hit the gas when the brakes seem like a better idea to slow you down but that makes things worse. If you hit the brakes the trailer's momentum continues, and your vehicle now becomes a pivot point for that kinetic energy to bounce off. Whereas when you accelerate briskly you are pulling the trailer's front end out of the swerve. You are basically yanking the trailer straight again. You'll thank me later.
Even the safe position in this demo, is wrong. The load needs to be such that the down force on the towball is 50-80 kgs. Too much towball weight, and the front of the car is light and vague.
Problem that is also wrong, you want the weight in the center if possible. Cause if the weight is to much, it will remove weight from the front wheels.
This is exaggerated because he is using a weightless toy with small hard plastic wheels and no traction for the truck and then a massive heavy trailer with huge rubber wheels. This is not to scale at all. Wheels on both trailer and truck would be basically same size and truck would be much heavier.
E assim mostrarei minha grandeza e minha santidade, e me darei a conhecer à vista de muitas nações. Então eles saberão que eu sou o Senhor . (Ezequiel 38:23) 💟
Be aware of loading too much weight on the tongue of your trailer, too. Or else you could hit a bump and cause lift to the front wheels of your tow vehicle. You don't want as much lift on your steer tires, as shown in this video. Some weight on the tongue is enough. I would back the RV up a little bit, chock the tires, and strap it in place.
@@heisenburgeronthetoilet The problem is too much downward force can cause too much lift on your front steering tires. However this model truck has a shorter outswing on the bed than most trucks have. (Might not be a problem with a truck like this).
Doesn’t change the fact that people might not notice the car roll back while they’re driving. Even if it’s some how strapped you cannot predict the future.
I did not know that superior and I am a professional driver. I'm going to keep an eye out for this in the future. I'm guessing this works of long beds as well?
The safe position is to have the load mass displaced evenly over trailer axles slightly forward. 60/40 ish. Don’t want too much tongue weight lifting front of the tow rig, but too far back on trailer lifts the rear of the tow rig and will cause trailer to sway badly at best.
I wish he was my Physics teacher.
Same
If only this was real life. Vehicles don't drive from a fixed point in the front like he has the truck.
Me toooo
@@-Nathan87- well i doubt he'd want to test it in a real car, you can be that person tho. It's a good enough simulation and it makes sense.
Lol agreed
This is actually really smart and I wished we learned this in high-school because it only take 5 minutes to teach and you'll remember it forever.
They do teach you it in physics, They don't tell you the exact example but they give you all of the basics that are needed to understand this reaction
@Edoc exactly. Glad I’m not the only one with real world experience watching a 40 year old man with toys on a treadmill trying to play UA-cam engineer
its common sense? wish you learned in high school, lmao
Uhaul has had videos like this online for probably a decade now
Bro wdym you didn't learn about center of gravity in school?
Just make sure your vehicle and towball setup can handle that amount of hitch weight. If it cant you will need to move the weight closer to the trailer axle
I don't get it. I thought it was safer to load further back
@@sunofpeter2it is, but only if your trailer can handle it. You could break the tongue or your suspension might not be stiff enough, causing it to bottom out. There are different size trailers with different weight capacities, so it's really simple: know your trailer, and don't try to haul anything too big. Then, you can always use this technique.
@@CrawlerMedia I got yah. I have watched the demo with the same set up( models on a treadmill) and the load was placed further back and the trailer stable.
Es correcto
I transport a lot of small equipment for my work ( mini excavator, Bobcat etc) and it all depends on which truck and trailer combo I'm using, but I generally try to keep the majority of the weight over the dual axles on the trailer, but if I can't, then I always put the load towards the front of the trailer to avoid losing control.
"How did you die?"
"My truck vibed too hard"
Same I almost died due to the road
@@bencechrist9143ضرر١ ضرر ضد ص٢س
Lmao
@Jiann skyler That's a joke, i think
@Jiann skyler I can't💀
Ppl don't even get jokes anymore.
This is why I don’t use the treadmill. Just too dangerous. 🎃
Lol
🤡
Underrated comment
Genius.....shear Genius.
It's only dangerous if you've got too much weight in the back end.
Centering the load over the trailer axle is actually the most stable.
Finally common sense has entered the chat 😅SMH. BINGO!!!!
But not Always ideal
Ideally over or slightly in front of the axle
None of it matters. Weight is weight and doesn't matter how far forward or back it is. Don't do 65 on the highway while pulling a trailer like you shouldn't be anyway and there's no problem or risk at all.
@@Gizamalukeix please do not tow anything
I know this is technically teaching something, but dang it that would be a fun grown up toy to play with all day
Ikr I wanna put a bunch of muscle cars or hyper cars on it and just watch them "race" eachother XD
I prefer fleshlight to play all day with ☠️
@@Bopoo☠️❔
@@Bopoo💀🐵
@@BopooJesus
So what you’re showing me is that there’s 2 trailer modes “boring mode” and “fun mode” ❤
🤣😂🤣👍🏻
LOL
🤣🤣🤪
🤣🤣🤣🤣
Exactly. The video should be called “how to slide a trailer on the highway”
Its actually better to put the load above the wheels of the trailer cuze putting it all the way forward could take your front wheels up and your steering could cause problems
100%
Then you have too big a load for the vehicle to handle anyway. If the front end lifts that high, you also lose the effectiveness of your brakes. Get a bigger truck. But people don't.
60/40 split above the axle
If you need to haul a skid steer maybe but for something that isn't so heavy you want in the front of the trailer. If it's a razor you actually have then I would put over the trailer tires but a gold cart or something similar you can also put to the front.These toys aren't accurate representations but it gets the just of it.
What all of you are failing to notice here is that UTVs are back heavy! The majority of the weight on 99% of the UTVs on the market are in the rear. By having the Rzr as far forward on the trailer as possible it is putting the majority of the weight over the trailer axles. If you center your UTV you are putting more of the weight to the rear of the trailer and that is bad. UNLESS, you back your UTV on and then in that case your going to want to try and get it more towards the rear of the trailer. Know what your towing is one of the most important aspects of towing.
Finally something interesting and educational to watch👍🏻
This is crazy, my grandfather father actually taught me to ALWAYS load the heavier weight in the front of a trailer to keep it from walking now I see exactly what he meant
wel it also works if you load it on top off the whealbase of the trailer if you have ful trailer ;)
I thought that's why trailers had their wheels in the back
@@Eduardo_Espinoza no
Grandfather was a wise man
What's crazy is you have to see a stupid video to understand the common sense your papa tried to teach you. That's crazy 🤣
Bro be explaining important life facts that my physics teacher takes an hour to explain. Great job 👏
I was literally talking about this last night 😳
Algorithms
Welcome to UA-cam/Google algorithms, they hear and see any and every thing
watch out then, google is spying on you... 😁🤣🤣
illuminati
Your phone listening to you.
I suggest do the same video simulating a load in a truck, before and after the rear axle.
Um vídeo simples, que evita muitos acidentes e salva muitas vidas, obrigado!!!
Tu não viu que ele é americano?
@@BemTeViOficial
Algumas pessoas têm o hábito de comentar em seu próprio idioma, quer os outros entendam ou não. Eles nem se importam em usar um tradutor.
Exatamente
Eu tenho um tio q capotou dessa forma ai
@@prysp we usually have a option to translate to English right below the comment so we can read it. I know I didn’t translate mine but I think it should work for other languages too.
Genuinely one of the most helpful videos ever. When the time comes where I need to tow something I know I'm gonna think of this video
you should more so have it directly over the tires of the trailer so you have full control.
more weight in back of trailer means your back of the truck is lighter, more in the front of the trailer, than the trucks back is heavier and the front of the truck won't have much control for steering.
It's a toy truck on a treadmill ffs.
Yes, this is why they have you strap it in place. The weight matters though. Here is what google has to say: "Following the 60/40 rule when loading a trailer is vitally important for safe towing. The best way to load for proper weight distribution is to start with the largest and heaviest items. Place heavy cargo in the center of the trailer, just forward of the axle.
What about ? I was Allways taught - keep the Load directly over the axles.
over the axles is right, than control the weight on the trailer hitch...the rear axles of the car is important for stability, but the steering axles needs weight too
Over axles is good just aim for a like 6 inches passed center so u have just a little extra weight forward not perfect 50/50
I don't know anything about towing but I imagine it's a good ideea to keep the weight between two axles. Not on the axles but between the axles. Anything that is not between the wheels of the car pushes from the exterior and the direction of the force is inverted cos of lever effect, while pushing right it pushes front to the left. And exterior in front pushes the rear in opposite direction so to make it stable ... between axles
It is very correct, the demonstration is not quite good here because with toys you dont have effects that have with heavy weight. If you put the load completely front as demonstrated it will lift the front part of the car and put a lot of weight on the back which will stress the suspension and on top of that you lose traction with your front tires so in some conditions you might not even be able to steer. This is different from car to car, it might not be so tragic on a ford raptor but on smaller cars it’s very dangerous! Keep the weight in the middle.
@@grosucristi6599 lever effect. The engine is far away in the front. You need a lot of weight on towing hook to lift the front. And there can't be a lot cos ... lever effect... The weight is closer to trailer axle then hook. So logically ... not on the trailer axles is best but in front of them. Btw we are talking about center of mass. To have the center of mass in front of the axle you don't need the entire load in front of the axle
Nice, now I will know when I get a trailer on my 2005 GMC Sierra!!
the weight in the back of the trailer takes traction from the back of the truck making it harder to correct, Thats very useful information especially for truckers
정말 중요한 정보네요 감사합니다.
You’re supposed to center your load over the wheels of the trailer, with a bias towards the front, but never all of your weight to the front.
See the weights
What I was told
50 -75 kg weight on the hitch
That’s what I always do
Yeah I agree. It would have nice to see him put the load right over the wheels which should be the center of gravity for the trailer.
Had an employee at my old job that loaded the back of trailers with heavy equipment because he swore it "saved time". We warned him but he said "BS". He lost his job after he jackknifed on the highway in high winds and destroyed our skid steer.
How the hell does it save time?? Takes 20 more seconds to properly move it to the front
@@eclipz3424 your guess is as good as mine 🤣
좋은 정보 감사합니다
Meanwhile I more interested in wanting to know where they got the toy truck and trailer 🤣 lmao
SAME ahahahahhah
Same lol
As someone who pulls a trailer on a daily basis you always learn where your center of gravity over your rear axles are.
Right, lots of tongue weight, causes braking problems. Real life is different than a toy car! Ha
@@scottmason5508 it causes a lot of bucking while braking
@@angeljasso3349 right bra, I only like bucking when I'm on a gal, I mean a horse! Ha
Agreed
🤣😂
My adhd is really wanting this truck and trailer rn , I need this car .
Moral of the story:
Never drive on a treadmill.
🪑
When you're teaching physics at 2 and off to teach mechanics at 3
The best use of one minute in UA-cam shorts hats off man
Thank you for the education keep up the good work
😎💯
i actually never knew this so thank u
It's called tongue weight, it's very important
moral of the story: keep a toy truck and a trailer and a small atv and a treadmill with you to check your wight distribution
If you MUST load to the rear, dial up the gain on your trailer brakes. Make sure the trailer brakes apply way before the vehicle brakes apply. This can also save you in a tail-wag situation due to high winds. If the trailer gets wagging back there, grab the manual trailer application lever and get things pulled straight again. When you are out of those situations remember to return your trailer brake gain back to normal driving setting. Always load the trailer hitch level, when in tow and loaded. And, You can still get in a dangerous tail wag situation, even with load leveler bars and slider tension bar on the hitch.
Извини братишка, но это не работает, привет от дальнобоя.
The first time I towed a trailer I watched this, pros of being born post 1990
Waiting for someone saying : it's only applicable when your truck is towed 🗿
What?
What a weird thing to devote your life to waiting for...
i agree... for sure it will behave difrent when the truck is actuall the 1 pulling the trailer .. but wht he is showing here is both the truck and the trailer is towed
Lol I saw that right away and was like how come nobody mentioning it lolol 😂
My family were being held hostage, thank God this video came along and saved them I'm so thankful 🙏🙏❤️❤️
Wtffff🤣🤣🤣
🤣😭
@RilvX this got his family saved y is that so hard to understand
Pov:Beamng Drive but Drunk
WTF...i literally just wanna go towing my cousin car and what a chance that I found this video about the correct way to towing a car😅😅
Yt do be stalking you
Meus parabéns pra você, esse sim é um vídeo muito importante, pois ajudam a salvar vidas 👏👏🤝🙏🏻🇧🇷.
“How many times have you watched this”
Me: yes
Like not even once
The most fun is the dangerous position 😂😂😂 so no……
Очень поучительно...
Браво!
Tongue weight is super important to know about when towing for sure!
Wenigstens einer der es einmal richtig zeigt was passiert wenn falsch geladen ist. 👍👍👍👍👍👍👍👍
You cargo should be evenly weighed over the trailer axel with about 10% tongue weight. Too much like you recommend squats the rear of the tow vehicle and raises the front. This lessens the drivers visibility but more importantly it reduces from tire traction so steering and braking become more difficult.
So glad you showed this I knew this when I first started to tow but I was very surprised alot of people didn't actually know this
Wow, this was honestly the best video I have seen on youtube shorts!
Saw a guy in a Toyota Corolla hauling 3 unsecured logs that were sliding back and forth
Wow dude that was true info. I've never towed anything b4 but omg that's seriously valuable. 🤯🙏🏽👍🏽
Well don't listen to it. First priority needs to be to keep the weight over the axle so you don't destroy your tow bar.
Also accelerate, instead of braking if you want to correct the swinging by a manouver you regretted instantly. E.g. steering too harshly to make room for an ambulance..
It’s better to have the weight over the axels because if you have it on the tongue/front of the trailer your putting all that weight on the trucks rear end.
60/40 is ideal 😮💨
Если уж конкретно ,то пример не совсем то на практике рабочий. Хотяб то ,что не один автомобиль не имеет точку поддержания, кроме своих колёс😄
なるほど！！
勉強になりました！！👍🏻
Thank you for this, I’ve just moved to Oz and trailers are part of life, I’ll remember this 🙂👍
Having grown up in OZ it's really common sense. Plus read the car manual, it'll tell you all about how to load a trailer.
The number of times you can tell someone didn't read the manual and spec the car for the trailer when on a country drive is scary.
You can't just say this with no reguard for tongue weight! Cars have ideal and maximum trailering tongue weight ratings. This is irresistible, if you overload the hitch tongue you lose steering control or worse and just have a different kind of accident
Pro tip. If your trailer starts to sway like that, do not panic and accelerate! I know it seems counter intuitive to hit the gas when the brakes seem like a better idea to slow you down but that makes things worse. If you hit the brakes the trailer's momentum continues, and your vehicle now becomes a pivot point for that kinetic energy to bounce off. Whereas when you accelerate briskly you are pulling the trailer's front end out of the swerve. You are basically yanking the trailer straight again. You'll thank me later.
ঠচঠঙৌঙণণঢণমভগঝণsesa
make sure you don't throttle into the ditch. keep cool and don't over correct the steering when doing this. I agree with your statement 100%
Even the safe position in this demo, is wrong. The load needs to be such that the down force on the towball is 50-80 kgs. Too much towball weight, and the front of the car is light and vague.
That is the best way I've ever seen anyone explain that, good work bro.
Problem that is also wrong, you want the weight in the center if possible. Cause if the weight is to much, it will remove weight from the front wheels.
Excellent advice!!! This type of automotive youtubers I love them!
may need to study physics first 🤣🤣🤣 bcz as a engineer i found the rope is not applied in front of the trucks
Cool story bra
This is exaggerated because he is using a weightless toy with small hard plastic wheels and no traction for the truck and then a massive heavy trailer with huge rubber wheels. This is not to scale at all. Wheels on both trailer and truck would be basically same size and truck would be much heavier.
so towing a boat (weight of the engine in the back) is a bad idea??
No because the axle(s) on boat trailers is typically further back
Just don't pull it with a Ford,I guess?
How many trailers have you seen with the wheels in the middle?😂
Golf cart trailers and a few landscape trailers. They are smaller than this setup.
No, it demonstrates why balancing the trailer is critical. A boat trailer should always be front heavy
Your so helpful probably saving many people and families
E assim mostrarei minha grandeza e minha santidade, e me darei a conhecer à vista de muitas nações. Então eles saberão que eu sou o Senhor .
(Ezequiel 38:23) 💟
I mean, the treadmill is so freaking awesome 🔥
This is more interesting than half the stuff I see on this channel.
Now try that with most of the load over trailer axle, towing like that is too hard on truck suspension...
Same thing goes for the load, folks. As far forward and weight centered as you can get it, in a pickup, moving truck, etc
And this is a kind of useful educational material that definitely is not taught in public education system 🤣🤑🤣
Que. interesante.....()
I would like to see the very same video with a Barbie doll driving to see if it would produce the same results.
Trailers with 2 axes are more practical anyway.
Did you learn something today
or you prefer Chinese TikTok 😂😂😂
Be aware of loading too much weight on the tongue of your trailer, too. Or else you could hit a bump and cause lift to the front wheels of your tow vehicle. You don't want as much lift on your steer tires, as shown in this video. Some weight on the tongue is enough. I would back the RV up a little bit, chock the tires, and strap it in place.
yes and make sure if you load it this much front that your tongue and suspension is string enough
@@heisenburgeronthetoilet The problem is too much downward force can cause too much lift on your front steering tires. However this model truck has a shorter outswing on the bed than most trucks have.
(Might not be a problem with a truck like this).
If I didn’t see this I would probably have died.nice video
Задняя часть автомобиля становится легче за счет груза в задней части прицепа и начинается такая скользячка
“Dangerous my as”- some random person
Doesn’t change the fact that people might not notice the car roll back while they’re driving. Even if it’s some how strapped you cannot predict the future.
Cool story bra
put the load directly over the trailer axle, especially if there's already cargo weight in the back of the pickup truck tow vehicle
No. Always try 60/40. A vehicle must support the extra load
I see! The car is moving forward because the road is moving backwards
This is how Central froce works....
torsion aka torque.
thanks, that might be useful to me.
I did not know that superior and I am a professional driver. I'm going to keep an eye out for this in the future. I'm guessing this works of long beds as well?
I don't mean to sound like a snob or anything. But I thought this was common sense. I guess not.
Lernt man in der Fahrschule. Die Stützlast der Anhängerkupplung muss man vor der Fahrt kontrollieren. Zumindest in Deutschland....
Holy! I want one of those. I'd be messing with it all day.
It’s a painted treadmill lol
Thanks
Now put two in the trailer instead of one.
Now show us how it responds to braking forces
Hey where did you get the f-150 from?
Now lets talk about braking!
In not going to send this to my family😚
I’ll tell my family the opposite hahaha
Plot twist: you cant change lines
I have a salousion 4 or 5 of them.
The safe position is to have the load mass displaced evenly over trailer axles slightly forward. 60/40 ish. Don’t want too much tongue weight lifting front of the tow rig, but too far back on trailer lifts the rear of the tow rig and will cause trailer to sway badly at best.
Nah, everything will be alright 👍
Bro what is the prize of this track
The best demostration ,thanks
Очень интересно🤔💭 но нефига не понятно