A model train with a mass of #9 kg# is moving along a track at #18 (cm)/s#. If the curvature of the track changes from a radius of #24 cm# to #42 cm#, by how much must the centripetal force applied by the tracks change?
The centripetal force applied by the tracks change is
As we know change in force '
Conversion into metres for SI units
Similarly to the velocity
Substituting these values in above force equation we get,