I was getting super frustrated with my homework because my book, my lecture, and my notes weren’t helping me at all so this was greatly appreciated thank you
You're welcome! I am so glad that you found this channel and that it is helping you understand Physics. Keep up the great work and thank you for being a part of this community! 😀
I screwed up twice solving this problem. First, off I accidentally used static friction when I should have used kinetic in part a, and then when I was drawing out my free body diagrams (I drew one for the cart and one for the dogs and then connected them via a system of equations) I accidentally accounted for friction of the dogs using the same frictional coefficient as the sled, when I shouldn't have been doing so at all. Goes to show how important the initial setup is, the rest often is just busy work. Great video man!
This is a great learning lesson, Woody! It all comes down to the initial setup and once that is down perfect, the rest is just calculations! Keep up the hard work! 😀
As well as your sister (in chemistry) you`re always rounding intermediate calculations, but ONLY final results should be rounded!!! Still thank you for your efforts!!!!!
Thank you for your input, Sergey! We are currently in the process of leaving pinned comments when needed on videos with significant figures rounding. I am glad that you are using this channel as a way to learn Physics and Chemistry - keep up the great work and a huge THANK YOU. (again) for your support in us and in the channel! 😀
Hi, for the last part with significant figures are we not considering the 200 to have 1 sig fig? cause then wouldn't our answer have to be one sig fig? thanks
Technically yes, though most professors consider that too much rounding. Answers are rarely given with one significant figure. The book gives 3 sig figs as the answer. Basically, after Chapter 2 no one cares about sig figs. 😂
Hi, this video was helpful but there was one thing I didn't understand. why is it that when we are calculating the force of tension, we ignore the mass of the dogs and only consider the mass of the sled. Why isn't it both or only the mass of the rope (had it been given). Because we are looking at the tension applied on the rope.
Hi Jason! Good question - in the free-body diagram for letter c, the perspective of the sled was taken into consideration. Since it is only the sled, the mass value in the tension formula has to only be of the sled. There are 2 methods to performing this part of the problem, but the easiest was to just use only the sled so that the calculations were easier. Hopefully this makes sense!
Hello! Great video btw I have a question, so in B when I sumed and divided by 362 I got -0.14 m/s Is it bc my calculator is on D? Thats how my physics prof wants us to have our calculator on
I was getting super frustrated with my homework because my book, my lecture, and my notes weren’t helping me at all so this was greatly appreciated thank you
You're welcome! I am so glad that you found this channel and that it is helping you understand Physics. Keep up the great work and thank you for being a part of this community! 😀
I screwed up twice solving this problem. First, off I accidentally used static friction when I should have used kinetic in part a, and then when I was drawing out my free body diagrams (I drew one for the cart and one for the dogs and then connected them via a system of equations) I accidentally accounted for friction of the dogs using the same frictional coefficient as the sled, when I shouldn't have been doing so at all.
Goes to show how important the initial setup is, the rest often is just busy work.
Great video man!
This is a great learning lesson, Woody! It all comes down to the initial setup and once that is down perfect, the rest is just calculations! Keep up the hard work! 😀
Great explanation
Thank you - keep up the great work! 😀
As well as your sister (in chemistry) you`re always rounding intermediate calculations, but ONLY final results should be rounded!!! Still thank you for your efforts!!!!!
Thank you for your input, Sergey! We are currently in the process of leaving pinned comments when needed on videos with significant figures rounding. I am glad that you are using this channel as a way to learn Physics and Chemistry - keep up the great work and a huge THANK YOU. (again) for your support in us and in the channel! 😀
Thanks so much for this video! It really helped me:)
You got it, Zainab! It's amazing to see these videos helping you! Keep working hard and help us spread the word! 😀
Amazing videos! I just don't understand the concept of rounding non decimal numbers. Rounding decimals ok, rounding hole numbers?
Thank you!
You're welcome, Tom! 😀
Hi, for the last part with significant figures are we not considering the 200 to have 1 sig fig? cause then wouldn't our answer have to be one sig fig? thanks
Technically yes, though most professors consider that too much rounding. Answers are rarely given with one significant figure. The book gives 3 sig figs as the answer. Basically, after Chapter 2 no one cares about sig figs. 😂
@@GlaserTutoring yeah i stopped using them as soon as that chapter was over. I would rather focus on the physical principles of the problem
Hi, this video was helpful but there was one thing I didn't understand. why is it that when we are calculating the force of tension, we ignore the mass of the dogs and only consider the mass of the sled. Why isn't it both or only the mass of the rope (had it been given). Because we are looking at the tension applied on the rope.
Hi Jason! Good question - in the free-body diagram for letter c, the perspective of the sled was taken into consideration. Since it is only the sled, the mass value in the tension formula has to only be of the sled. There are 2 methods to performing this part of the problem, but the easiest was to just use only the sled so that the calculations were easier. Hopefully this makes sense!
Hello! Great video btw
I have a question, so in B when I sumed and divided by 362 I got -0.14 m/s
Is it bc my calculator is on D?
Thats how my physics prof wants us to have our calculator on