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?

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Answer 1 · 2017-02-12T15:07:54

The centripetal force is $=7106.1N$

The centripetal force is

$F=mr omega^2$

The variation in centripetal force is

$DeltaF=mr(Delta omega)^2$

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

$=45*16*pi^2$

$=7106.1N$

A model train, with a mass of 15 kg15 kg, is moving on a circular track with a radius of 3 m3 m. If the train's rate of revolution changes from 3 Hz3 Hz to 1 Hz1 Hz, by how much will the centripetal force applied by the tracks change by?