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

##### 1 Answer

Nov 1, 2017

The centripetal force will increase by a factor of 5/4.

#### Explanation:

The formulas for both kinetic energy

and centripetal force

have a

I hope this helps,

Steve