# A model train with a mass of #8 kg# is moving along a track at #9 (cm)/s#. If the curvature of the track changes from a radius of #180 cm# to #63 cm#, by how much must the centripetal force applied by the tracks change?

##### 1 Answer

Dec 1, 2017

The change in centripetal force is

#### Explanation:

The centripetal force is

The mass is

The velocity is

The radii are

and

The variation in centripetal force is

The centripetal forces are