A model train, with a mass of #12 kg#, is moving on a circular track with a radius of #9 m#. If the train's kinetic energy changes from #36 j# to #9 j#, by how much will the centripetal force applied by the tracks change by?
1 Answer
May 9, 2017
The centripetal force changes by
Explanation:
The centripetal force is
The kinetic energy is
The variation of kinetic energy is
The variation of centripetal force is