JEE Exam  >  JEE Questions  >   A thin ring of mass 2 kg and radius 0.5 m is... Start Learning for Free
A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision,
  • a)
    the ring has pure rotation about its stationary CM
  • b)
    the ring comes to a complete stop
  • c)
    friction between the ring and the ground is to the left
  • d)
    there is no friction between the ring and the ground
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping...
We know that 0.1 × 2.0 = 2 kg m/s
Friction with ground gives no impulse.
FΔt = mΔv
= 0.1(20 - 0) = 2 N-s
Using: angular impulse = change in angular momentum, we get:
Note that we have assumed that direction of angular velocities is same before and after and since LHS of the above equation is positive, ω2 > ω1.
Thus, the ring must be slipping to the right; hence, the friction will be to the left as it will be opposite to the direction of motion.
Thus, option 3 is correct.
Explore Courses for JEE exam

Similar JEE Doubts

A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision,a)the ring has pure rotation about its stationary CMb)the ring comes to a complete stopc)friction between the ring and the ground is to the leftd)there is no friction between the ring and the groundCorrect answer is option 'C'. Can you explain this answer?
Question Description
A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision,a)the ring has pure rotation about its stationary CMb)the ring comes to a complete stopc)friction between the ring and the ground is to the leftd)there is no friction between the ring and the groundCorrect answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision,a)the ring has pure rotation about its stationary CMb)the ring comes to a complete stopc)friction between the ring and the ground is to the leftd)there is no friction between the ring and the groundCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision,a)the ring has pure rotation about its stationary CMb)the ring comes to a complete stopc)friction between the ring and the ground is to the leftd)there is no friction between the ring and the groundCorrect answer is option 'C'. Can you explain this answer?.
Solutions for A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision,a)the ring has pure rotation about its stationary CMb)the ring comes to a complete stopc)friction between the ring and the ground is to the leftd)there is no friction between the ring and the groundCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision,a)the ring has pure rotation about its stationary CMb)the ring comes to a complete stopc)friction between the ring and the ground is to the leftd)there is no friction between the ring and the groundCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision,a)the ring has pure rotation about its stationary CMb)the ring comes to a complete stopc)friction between the ring and the ground is to the leftd)there is no friction between the ring and the groundCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision,a)the ring has pure rotation about its stationary CMb)the ring comes to a complete stopc)friction between the ring and the ground is to the leftd)there is no friction between the ring and the groundCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision,a)the ring has pure rotation about its stationary CMb)the ring comes to a complete stopc)friction between the ring and the ground is to the leftd)there is no friction between the ring and the groundCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A thin ring of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal plane with velocity 1 m/s. A small ball of mass 0.1 kg, moving with velocity 20 m/s in the opposite direction, hits the ring at a height of 0.75 m and goes vertically up with velocity 10 m/s. Immediately after the collision,a)the ring has pure rotation about its stationary CMb)the ring comes to a complete stopc)friction between the ring and the ground is to the leftd)there is no friction between the ring and the groundCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice JEE tests.
Explore Courses for JEE exam

Top Courses for JEE

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev