# 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 # 6 Hz# to # 9 Hz# in # 8 s#, what torque was applied to the object?

##### 1 Answer

Jun 4, 2018

The torque is

#### Explanation:

The torque is the rate of change of angular momentum

where

For the object moving in a circular motion,

The mass is

The radius is

So,

The rate of change of angular velocity is

So the torque is