A model train, with a mass of 2 kg, is moving on a circular track with a radius of 4 m. If the train's kinetic energy changes from 4 j to 16 j, by how much will the centripetal force applied by the tracks change by?
1 Answer
Feb 3, 2016
I found an incrase of
Explanation:
We can consider an initial and final position and have:
