A model train, with a mass of #6 kg#, is moving on a circular track with a radius of #2 m#. If the train's rate of revolution changes from #2 Hz# to #6 Hz#, by how much will the centripetal force applied by the tracks change by?
The force will change by
The equation for centripetal force is
We know that the mass is
We know that
Therefore the centripetal force will change by