A model train, with a mass of $3 kg$ , is moving on a circular track with a radius of $4 m$ . If the train's rate of revolution changes from $3 Hz$ to $2 Hz$ , by how much will the centripetal force applied by the tracks change by?

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Answer 1 · 2017-02-10T08:00:40

The answer is $=473.7N$

The centipetal force is

$F=mr omega^2$

$m=$ mass

$r=$ radius

The variation in centripetal force is

$Delta F=mr (Delta omega)^2$

$Delta omega =(3-2)*2pi rads^-1$

$Delta F=3*4*(2pi)^2=473.7N$

A model train, with a mass of 3 kg3 kg, is moving on a circular track with a radius of 4 m4 m. If the train's rate of revolution changes from 3 Hz3 Hz to 2 Hz2 Hz, by how much will the centripetal force applied by the tracks change by?