As a part of a maintenance inspection the compressor of a jet engine is made to spin according to the graph as shown. Find the number of revolutions made by the compressor during the test?

The speed of the motor of an engine is 300 rpm. In 2 s, the speed increases to 420 rpm. Calculate the number of revolutions made by the motor.

The speed of the motor of an engine is 300 rpm. In 2 s, the speed increases to 420 rpm. Calculate the number of revolutions made by the motor.

A grinding wheel attained a velocity of 20 rad/sec in 5 sec starting from rest. Find the number of revolutions made by the wheel.

The angular speed of a motor wheeen is increased from 1200 r.p.m to 3000 r.p.m. in 10 seconds. Calculate the number of revolutions made by the engine during the time.

In the given diagram a rope is wound round the outside of a circular drum whose diameter is 70 cm and a bucket is tied to the other end of the rope. Find the number of revolutions made by the drum if the bucket is raised by 11 m.

The angular velocity of a wheel increases form 100 rps to 300 rps in 10 sec.The number of revolutions made during this time is :