[10/12, 6:54 PM] Anshuman: Q10. An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy? If the object is allowed to fall, find its kinetic energy when it is half-way down. Q11. What is the work done by the force of gravity on a satellite moving round the earth? Justify your answer. When a satellite moves round the Earth, then at each point of its path, the direction of force of gravity on the satellite (along the radius) is perpendicular to the direction of its displacement (along the tangent). Hence, the work done on the satellite by the force of gravity is zero. Q12. Can there be displacement of an object in the absence of any force acting on it? Think. Discuss this question with your friends and teacher. The answer is both Yes and No. Yes because when an object moves in deep space from one point to another point in a straight line, the displacement takes place, without the application of force. No, because force cannot be zero for displacement on the surface of earth. Some force is essential. [10/12, 6:55 PM] Anshuman: Q13. A person holds a bundle of hay over his head for 30 minutes and gets tired. Has he done some work or not? Justify your answer. The person does not do work because no displacement takes place in the direction of applied force as the force acts in the vertically upward direction. Q14. An electric heater is rated 1500 W. How much energy does it use in 10 hours? Energy consumed by an electric heater can be obtained with the help of the expression, P=W/t where, Power rating of the heater, P = 1500 W = 1.5 kW Time for which the heater has operated, t = 10 h Work done = Energy consumed by the heater Therefore, energy consumed = Power × Time = 1.5 × 10 = 15 kWh Hence, the energy consumed by the heater in 10 h is 15 kWh or 15 units. Q15. Illustrate the law of conservation of energy by discussing the energy changes which occur when we draw a pendulum bob to one side and allow it to oscillate. Why does the bob eventually come to rest? What happens to its energy eventually? Is it a violation of the law of conservation of energy? When the pendulum bob is pulled (say towards left), the energy supplied is stored in it is the form Of PE on account of its higher position. When the pendulum is released so that it starts moving towards right, then its PE changes into KE such that in mean position, it has maximum KE, and Zero PE. As the pendulum moves towards extreme right, its KE changes into PE such that at the extreme position, it has maximum PE and zero KE. When it moves from this extreme position to mean position, its PE again changes to KE. This illustrates the law Of conservation of energy. Eventually, the bob comes to rest, because during each oscillation a part of the energy possessed by it transferred to air and in overcoming friction at the point of suspension. Thus, the energy of the pendulum is dissipated in air. The law of conservation of energy is not violated because the energy merely changes its form and is not destroyed. Q16. An object of mass, m is moving with a constant velocity, v. How much work should be done on the object in order to bring the object to rest? Kinetic energy of an object of mass m moving with a velocity v is given by the expression 1/2mv². To bring the object to rest, an equal amount of work i.e. 1/2mv² is required to be done on the object.
I really so much but all time song very fvt and my hospital wrok but siging this song all time ❤️❤️
😂😂😂😂
ye kia tha?
Na grammar h na vocabulary h😅
Duty Pe Dhyan De Baad Mein Singing Kar Le 😂😂😂
@@kajalbaghel7262 na Hindi ha ha English ha 😅😅
1:23 feel that ❤❤
1:22 feel that✨
Excetly yarr💫💕
H bhai sahi bola
1:20 amazing 😍
1:03 amazing
Now days : gulabi Aankhen jo teri dekhi eye flue hogya 😂❤
That's perfect 😂😂
😂😂😂😂
Right 😆
Bhai aaram se 😂
Toh phir Doctor kay pass tum jao or dawai lay kay aao 💜💜💜💜
Old is Gold 😍😍💞💞
Hmm
Yes sister 😎😎💗💗💗💗
You are not a queen bruh 🤦♂️
🥺🤍this song just gives a different old school vibe
Yes❤
Hm
Lagta hai keh aap ke school mai koi gulabi ankhein wali thi
😂😂@@Gfx_luke
@@Gfx_luke😂😂
1:40 best part❤
Milgayi Tuzh Se Najar Haay Yr Line 🤞😌🦋👀❤️
2:36🙂
1:16 is wow❤❤❤😮😮😊😊
Ye song Spotify mai bhi daldo na
Ye song itna accha kiu lagta hai bhai...? ❤❤❤
1:20 ita very amazing lines
All time fvt ❤️❤️
SajanGOoD
Gulabi aankhen ❌
Gulabi filter ✅😎
0:50
0:45
Addictive 💖
আমার অনেক প্রিয় একটা গান ❤
Hyeee Gurda Touching sOng>>😭❤️🥹💋
I love this song 💖😍
Best part ❤️❤️
1.15x
01:01 & 02:03
What a line gulabi aankhein jo teri dekhi sharabi Ye dil ho gya...
Sambhalo mjhko oo mere yaroooo.
Sambhalna mushkil ho gya...❤
1:23 feel this part 💕❤
I sung this on my intro in clg and everyone appreciates and called me gulabi aankho wli 😅
Fav song (amazing man) 😊
Me ra vi ❤❤
1:34😮😮
My husband k favorite song 🤣
Mubarak 🙂
To Mera bhi favt ha ap banogy Meri wife
@@Power.full.short1 tharki🙄
@@shorts-youtube5199 😂
@@shorts-youtube5199😂😂😂
Gulabi ankhe this word so awesome 👏✊👍👏✊👍
Just love this song 😊🌸💘❤️
1:22 feel that
And this is my favorite song ❤😊
Issss this song 👀💓✨
Le me thinking🤔: Ankhein kab se Gulabi hone lage😅🥺😩
Jabse pyar Ho Gaya..
But mara according Pyar Karna k Baad gulabi nhi balka red hu jate ha ro ro k 💔🥲🥺
@@matijaan4003 it's your fault bro pyar ki koi galti nahi Esme
😂😂
Piyar me sab hota hai vai😂
ye gaane pe usko imagine karne me alag hi level ka maja hai
😅😅
That's amazing ❤️❤️
👀👀👀👀👀👀👀👀
1:01 ❤
By this song I found my lifeline❤❤❤❤
20:10 I feel this song
I really love this song 💕🥰😍😍
Hmm❤❤
me to
1:30 fell 😮
1:33 mast ha
Sabakhan ki anken👀❤❤
Aankhein to war gai😅😂
Ankhein moyee moyee😅😂😂
Ganne ko 2x pe chalo suro sy 😂 btw Nice editing❤
love this song ...... Golapi Akaye 😍🙆♂️😇
"Golapi Akaye"☠️
@@Lost_Interstellarkonsi bhasha hai ye 😂😢
@@CR97024 it's bangali. It's "golapi akhen" tho. niqqa botched it completely
Favorite song
Mere bhi hesbent ka ferbet song hy yaar😊😊
Maha......love u sooo muchh ummmmah parh lo yar yh comnt😘😍😍😍😂
This song touch my heart😊😊😊
I'm 15 and that's song is my favourite ❤😅
I AM ALSO
Me too
Who is listening this masterpiece in 2024 ❤❤
Hayeee old memory radio weliii
Gulabi Ankhein 🩷💫💥😌😍
2:20
Anyone in July 2024❤
Agust
1:33 wah wah.....I will die😩😩😩😩
l love song.....👀☺️🍂
Hyeee ❤☝this song touch my heart 😙😙
Sanam makes it more amazing
Some recommendations will make your day 💫
My fav song i love ❣️❣️❣️🥰
Mahak...❤
Big fan of sanam puri❤🥰
Aisa or song chaiye ok bro ❤❤
Mere bhi hebet ka ferbt hy
My favorite song 🎉
❤️❤️nice😍
Song ta wow 💘💘😊😊😊
vibe toh ha yrr
Very nice song ❤❤❤
My fav song 😍❤️
My best friend's favourite song😊❤😊
Who will believe…it’s an old song!!!!!😅😅💗💗
you are right nxt level song
This song always reminds me of my crush❤
and my closest brother from my khwaab..shubham brother..😂😅 from this song I miss my brother..😂😅
Old is gold😊
my fvrt song ❤❤❤i singing this song All Time
I love this song ❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤❤ most beautiful 🥰😍😍😍😍
My favorite song ❤
Always fav ❤
Uff this song ❤❤
Anyone watching in 2024 😅❤
😢this song is this emosonal song❤🎉 is my favourite song 's you know im a broken😢
mai request karta hu ki isse ik baar o. 75 speed me dekhiye maza ayega ( in my opinion)
Gulabi ankhe🥀
Ahhh ❤
Ayyyyyhyyy kya song heaii
[10/12, 6:54 PM] Anshuman: Q10. An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy?
If the object is allowed to fall, find its kinetic energy when it is half-way down.
Q11. What is the work done by the force of gravity on a satellite moving round the earth? Justify your answer.
When a satellite moves round the Earth, then at each point of its path, the direction of force of gravity on the satellite (along the radius) is perpendicular to the direction of its displacement (along the tangent). Hence, the work done on the satellite by the force of gravity is zero.
Q12. Can there be displacement of an object in the absence of any force acting on it? Think. Discuss this question with your friends and teacher.
The answer is both Yes and No. Yes because when an object moves in deep space from one point to another point in a straight line, the displacement takes place, without the application of force. No, because force cannot be zero for displacement on the surface of earth. Some force is essential.
[10/12, 6:55 PM] Anshuman: Q13. A person holds a bundle of hay over his head for 30 minutes and gets tired. Has he done some work or not? Justify your answer.
The person does not do work because no displacement takes place in the direction of applied force as the force acts in the vertically upward direction.
Q14. An electric heater is rated 1500 W. How much energy does it use in 10 hours?
Energy consumed by an electric heater can be obtained with the help of the expression,
P=W/t
where,
Power rating of the heater, P = 1500 W = 1.5 kW
Time for which the heater has operated, t = 10 h
Work done = Energy consumed by the heater
Therefore, energy consumed = Power × Time
= 1.5 × 10 = 15 kWh
Hence, the energy consumed by the heater in 10 h is 15 kWh or 15 units.
Q15. Illustrate the law of conservation of energy by discussing the energy changes which occur when we draw a pendulum bob to one side and allow it to oscillate. Why does the bob eventually come to rest? What happens to its energy eventually? Is it a violation of the law of conservation of energy?
When the pendulum bob is pulled (say towards left), the energy supplied is stored in it is the form
Of PE on account of its higher position. When the pendulum is released so that it starts moving towards right, then its PE changes into KE such that in mean position, it has maximum KE, and Zero PE. As the pendulum moves towards extreme right, its KE changes into PE such that at the extreme position, it has maximum PE and zero KE. When it moves from this extreme position to mean position, its PE again changes to KE. This illustrates the law Of conservation of energy. Eventually, the bob comes to rest, because during each oscillation a part of the energy possessed by it transferred to air and in overcoming friction at the point of suspension. Thus, the energy of the pendulum is dissipated in air.
The law of conservation of energy is not violated because the energy merely changes its form and is not destroyed.
Q16. An object of mass, m is moving with a constant velocity, v. How much work should be done on the object in order to bring the object to rest?
Kinetic energy of an object of mass m moving with a velocity v is given by the expression 1/2mv². To bring the object to rest, an equal amount of work i.e. 1/2mv² is required to be done on the object.
???????
Bhai Gaana Bhi Sun Rhy Or Parh Bhi Rhy 😂
@@muhammadasifalvialvi2846 hn 😂😂
Do you want to become a iitian
You're definitely in class 9th
Nice photo jo bani hai gulabi hai iski aakh hai😍😘😙🙈🤗😊
Prem hogya to ❤
Fav song ❤
Song ta ❤😊
Can anyone explains me gulabi ankhai kiski hoti ha 😂
Emotional song 🖤😇💞
Hart feel song 💫💓💓💓
Gulabi Aankhen nhi mujhe dusra gulabi cheej pasand hai
Pahle ye song mujhe bahut aacha lagta tha but ab 💔
Op song
I love this song ❤️❤️❤️❤️
1.22 feel this part ❤