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What is angular impulse ?...

What is angular impulse ?

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The angular impulse acting on a body is the change in angular momentum of the body about a given axis.
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A cylinder having moment of inertia, which is free to rotate about its axis, receives an angular impulse of J kgm^(2)//s initially, followed by similar impulse after every 4 s . What is the angular speed of the cylinder 30 s after the initial impulse?

A wheel of mass 2 kg and radius 20 cm initially at rest is free to rotate about its axis. It receives an angular impulse of 4kgm^(2)s^(-1) initially and similar impulse after every 5 s of initial one. Calculate the angular speed of the wheel 22 s after the initial impulse.

A solid cylinder of mass 10 kg and radius 20 cm is free to rotate about its axis. It receives an angular impulse of 4 kgm^(2)rad//s . What is the angular speed of the cylinder if the cylinder is initially at rest ?

A solid sphere is rolling without slipping on rough ground as shown in figure. It collides elastically with another identical sphere at rest. There is no friction between the two spheres. Radius of each sphere is R and mass is m. What is the net angular impulse about centre of mass imparted to second sphere by the external forces?

Impulse is

PRADEEP-SYSTEMS OF PARTICLES AND ROTATIONAL MOTION-SHORT ANSWER QUESTIONS
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