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College Physics (Urone)
Found in: Page 219

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Short Answer

As a skater forms a circle, what force is responsible for making her turn? Use a free body diagram in your answer.

Centripetal force is responsible for the circular motion of the skater.

See the step by step solution

Step by Step Solution

Step 1: Definition of centripetal force

The centripetal force causes a body to follow a curved path. It always moves in the opposite direction of the body, towards the fixed point of the path's instantaneous centre of curvature.

The mass of the Skater is: m

The velocity of the skater is: v

The radius of the circle formed is: r

The weight of the skater is: W = mg

The centripetal force is = Fc

Step 2: Free body diagram

The free–body diagram when the skater forms a circle is shown below:

The expression for centripetal force is given as:

Fc =mv2r

A centripetal force is force that is necessary to keep the skater in a circular motion. The centripetal force is always acting towards the centre of the radius of curvature.

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