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

##### 1 Answer

Jul 17, 2017

#### Answer:

We will use cassical mechanics (rotation) equations to solve this problem.

#### Explanation:

With frequency of

With frequency of

The angular acceleration is then

and the torque is :