# An object with a mass of #4 kg# is revolving around a point at a distance of #5 m#. If the object is making revolutions at a frequency of #5 Hz#, what is the centripetal force acting on the object?

The centripetal force is

Centripetal force is what

Consequently,

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Centripetal force is

Centripetal force acting on a body in circular motion is given by

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The centripetal force acting on the object is 500 N.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- A model train, with a mass of #2 kg#, is moving on a circular track with a radius of #2/3 m#. If the train's rate of revolution changes from #1/2 Hz# to #6/5 Hz#, by how much will the centripetal force applied by the tracks change by?
- Can gravity do work on an object?
- A model train, with a mass of #3 kg#, is moving on a circular track with a radius of #2 m#. If the train's kinetic energy changes from #32 j# to #12 j#, by how much will the centripetal force applied by the tracks change by?
- If the mass of the body on earth is 10kg then its mass on the surface of the moon will be?
- A model train, with a mass of #3 kg#, is moving on a circular track with a radius of #1 m#. If the train's kinetic energy changes from #18 j# to #27 j#, by how much will the centripetal force applied by the tracks change by?

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