A model train, with a mass of #12 kg#, is moving on a circular track with a radius of #3 m#. If the train's rate of revolution changes from #6 Hz# to #4 Hz#, by how much will the centripetal force applied by the tracks change by?

1 Answer
Feb 22, 2017

Answer:

The variation in centripetal force is #=5684.9N#

Explanation:

The centripetal force is

#F=mr omega^2#

The variation in centripetal force is

#DeltaF=mr(Delta omega)^2#

#=12*3*((6-4)2pi)^2#

#=36*16*pi^2#

#=5684.9N#