# A model train, with a mass of #4 kg#, is moving on a circular track with a radius of #8 m#. If the train's kinetic energy changes from #32 j# to #0 j#, by how much will the centripetal force applied by the tracks change by?

##### 1 Answer

Apr 17, 2016

#### Answer:

#### Explanation:

Centripetal force is given as

Hence,