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Chapter 6: Q6.3-9CQ (page 219)

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

Short Answer

Expert verified

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

Step by step solution

01

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

02

Free body diagram

The free鈥揵ody 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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