# A model train, with a mass of #3 kg#, is moving on a circular track with a radius of #2 m#. If the train's rate of revolution changes from #5/8 Hz# to #3/4 Hz#, by how much will the centripetal force applied by the tracks change by?

##### 1 Answer

Jul 26, 2017

#### Answer:

The centripetal force change by

#### Explanation:

The centripetal force is

The mass is

The radius

The change in angular velocity is

The variation in centripetal force is