A model train, with a mass of #15 kg#, is moving on a circular track with a radius of #3 m#. If the train's rate of revolution changes from #3 Hz# to #1 Hz#, by how much will the centripetal force applied by the tracks change by?

1 Answer
Feb 12, 2017

Answer:

The centripetal force is #=7106.1N#

Explanation:

The centripetal force is

#F=mr omega^2#

The variation in centripetal force is

#DeltaF=mr(Delta omega)^2#

#=15*3*((3-1)2pi)^2#

#=45*16*pi^2#

#=7106.1N#