# A model train with a mass of #1 kg# is moving along a track at #4 (cm)/s#. If the curvature of the track changes from a radius of #160 cm# to #60 cm#, by how much must the centripetal force applied by the tracks change?

##### 1 Answer

Jun 22, 2016

#### Answer:

I found an increase of

#### Explanation:

Considering that centripetal force is:

you see that, at constant velocity, a decrease in radius (in meters) will imply a increase of force; so:

and

(everything in meters)

Centripetal force will increase of