**PHY 1151**

__Chapter 8; Potential Energy &
Conservative Forces__

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**| ToC,
Chapter 8 | Course Calendar
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a) With what speed does the arrow leave the bow?

b) How high does the arrow go?

c) What average upward force does the ground exert on the arrow while stopping it?

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a) Find its speed at point B, the bottom of the swing.

A peg is fixed at point O, a distance y directly below point P. The cord hits the peg and the ball swings upward in an arc as shown.

b) Find the ball's speed at point C when the cord between it and the peg is horizontal.

c) Find the ball's height (relative to its starting position) at point D, the top of its swing after hitting the peg (Assume y > L/2).

d) Find the ball's speed at point D, the top of its swing after hitting the peg.

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**| ToC,
Chapter 8 | Course Calendar
|**

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**(c) 2005, Doug Davis; all rights reserved.**