# Can anyone provide a step by step explanation?

(a)

(b)

(c)

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Of course, I'd be happy to provide a step-by-step explanation. Could you please specify the topic or subject you need assistance with?

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- A model train, with a mass of #5 kg#, is moving on a circular track with a radius of #9 m#. If the train's rate of revolution changes from #4 Hz# to #5 Hz#, by how much will the centripetal force applied by the tracks change by?
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- A particle moves in a circle of radius 25cm covering 2 revolutions per second what will be the radial acceleration of that particle?

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