A fly wheel starts from rest and after half a minute rotates at 2000 rpm. Calculate the (i) angular acceleration and (ii) number of revolution made by the wheel within this period. A rotor of turbine...

A fly wheel starts from rest and after half a minute rotates at 2000 rpm. Calculate the (i) angular acceleration and (ii) number of revolution made by the wheel within this period.

A rotor of turbine has an initial angular velocity of 1800 rpm. Accelerating uniformly, it doubled its velocity in 12 sec. Find the revolutions performed by it in this interval.