# A model train with a mass of #2 kg# is moving along a track at #36 (cm)/s#. If the curvature of the track changes from a radius of #6 cm# to #3 cm#, by how much must the centripetal force applied by the tracks change?

##### 1 Answer

Mar 5, 2017

#### Explanation:

Put the values we have into SI units:

The equation for centripetal force is

so the change in centripetal force is

Plug in the values we are given,