# An object with a mass of # 3 kg# is traveling in a circular path of a radius of #7 m#. If the object's angular velocity changes from # 13Hz# to # 17 Hz# in #5 s#, what torque was applied to the object?

##### 1 Answer

Jun 27, 2018

The torque was

#### Explanation:

The torque is the rate of change of angular momentum

For the object, the moment of inertia is

The mass of the disc is

The radius of the disc is

The moment of inertia is

The angular acceleration is

The torque is