Centripetal Force

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The following three questions refer to the material you were to read in preparation to the lesson. Questions one and two require you to write a three or four sentence response. Number three is a multiple choice question. Click in the appropriate circle.

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1.

Suppose you have a horse on a rope. The horse runs in a circle around you. Can you think of a way to slow down the horse without moving from your spot?

2.

You tie the horse to a tree with a rope with a breaking strength of 7500 lbs (33075 N).

How fast would the horse have to run to break the rope? (Use a reasonable estimate for the mass of the horse.)

3.

A car is slowing down to negotiate a curve on the road. The net horizontal force on the car is
zero
directed toward the center of curvature of the curve
directed along the tangent to the curve
none of above

You may change your mind as often as you wish. When you are satisfied with your responses click the SUBMIT HOMEWORK.

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