A model train, with a mass of #16 kg#, is moving on a circular track with a radius of #9 m#. If the train's kinetic energy changes from #40 j# to #9 j#, by how much will the centripetal force applied by the tracks change by?
1 Answer
Jul 12, 2017
6.88 N.
Explanation:
Here,
In 1st case,
In 2nd case,
Thank you!!!