A model train, with a mass of $6 k g$ $6 kg$ , is moving on a circular track with a radius of $2 m$ $2 m$ . If the train's rate of revolution changes from $4 H z$ $4 Hz$ to $6 H z$ $6 Hz$ , by how much will the centripetal force applied by the tracks change by?

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Answer 1 · 2017-02-23T19:06:03

The centripetal force is $= 1895 N$ $=1895N$

The centripetal force is

$F = m r ω^{2}$ $F=mr omega^2$

The variation in centripetal force is

$DeltaF=mr(Delta omega)^2$

$=6*2*((6-4)2pi)^2$

$=12*16*pi^2$

$=1895N$

A model train, with a mass of 6 kg6kg6 kg, is moving on a circular track with a radius of 2 m2m2 m. If the train's rate of revolution changes from 4 Hz4Hz4 Hz to 6 Hz6Hz6 Hz, by how much will the centripetal force applied by the tracks change by?