The angular speed of a motor wheel is increased from 1200 rpm to 3120 rpm in 16 seconds. (i) What is its angular acceleration, assuming the acceleration to be uniform ? (ii) How many revolutions does the engine make during this time ?

An electric fan is revolving with a velocity of 210 rpm. When its motion is increased with the help of a regulator, it attains a velocity of 630 rpm in 11 s. What is the angular acceleration of the fan? Also calculate the number of revolutions completed by the fan in that 11 s ?

The engine of a motor car is rotating at a constant speed of 150 rpm. Acquiring acceleration suddenly it gains a velocity of 3000 rpm in 3 s. What is the angular acceleration of the engine?

A wheel completes 400 revolutions in 1 minute. Its speed is increased to 600 rpm in 4 s. Determine the angular acceleration .

The motor of an engine is rotating about its axis with an angular velocity of 100 rpm. It comes to rest in 15 s, after being switched off. Assuming constant angular deceleration, what are the numbers of revolutions made by it before coming to rest ?

An electric fan acquires frequency of 300 rpm after completing 5 revolutions when it is switched on. Determine the angular acceleration of the fan and the time taken to acquire the frequency of 300 rpm.

The velocity of a car travelling on a straight road is 36kmh^(-1) at an instant of time. Now travelling with uniform acceleration for 10s, the velocity becomes exactly double. If the wheel radius of the car is 25cm, then which of the following numbers is the closest to the number of revolutions that the wheel makes during this 10s?

The engine of a motor car is rotating at a constant speed of 150 rpm. Acquiring acceleration suddenly it gains a velocity of 3000 rpm in 3 s. what will be its angular velocity after 2 s ?

Starting from rest, a wheel, with uniform acceleration, attains an angular velocity of 60 rad cdot s^(-1) at the end of 30 complete revolutions. What is the angular acceleration of the wheel?