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 #7 Hz# to #3 Hz#, by how much will the centripetal force applied by the tracks change by?

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Answer 1 · 2017-02-13T07:06:28

The change in centripetal force is #=22739.6N#

The centripetal force is

#F=mr omega^2#

The variation in centripetal force is

#DeltaF=mr(Delta omega)^2#

#=12*3*((7-3)2pi)^2#

#=36*64*pi^2#

#=22739.6N#