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Last Updated On 23-10-2022 - By Sara

A cylinder having moment of inertia, which isfree to rotate about its axis, receives an angular impulse of initially, followed by similar impulse after every 4 s. What is the angular speed of the cylinder 30 s after the initial impulse?

a)

b)

c)

d)

Zero


Question ID - 100189 :-

A cylinder having moment of inertia, which isfree to rotate about its axis, receives an angular impulse of initially, followed by similar impulse after every 4 s. What is the angular speed of the cylinder 30 s after the initial impulse?

a)

b)

c)

d)

Zero

1 Answer
5876 Votes
3537

Answer Key : (b) -

(b)

There can be a total of eight impulses given to the cylinder in 30 s. Using  for every impulse, we get



Next Question :

A bullet of mass 0.01 kg and travelling at a speed of 500 m/s strikes a block of 2 kg which is suspended by a string of length 5m. The centre of gravity of the block is found to rise a vertical distance of 0.1m. What is the speed of the bullet after it emerges from the block?

a)

200 m/s

b)

220 m/s

c)

204 m/s

d)

284 m/s


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