# 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 # 3 Hz# to # 29 Hz# in #3 s#, what torque was applied to the object?

##### 1 Answer

Mar 4, 2016

#### Answer:

Use the basics of rotation around a fixed axis. Remember to use

#### Explanation:

The torque is equal to:

Where

The moment of inertia:

The angular acceleration:

Therefore: