375_Dynamics 11ed Manual

375_Dynamics 11ed Manual - B acos h L = B 48.19 deg =...

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Engineering Mechanics - Dynamics Chapter 15 Solution: Guesses v B 10 km s = r B 10 Mm = Given Mv A sin φ A () r A Mv B r B = 1 2 Mv A 2 GM e M r A 1 2 Mv B 2 GM e M r B = v B r B Find v B r B , () = v B 10.2 km s = r B 13.8 Mm = * Problem 15-104 The ball B has weight W and is originally rotating in a circle. As shown, the cord AB has a length of L and passes through the hole A , which is a distance h above the plane of motion. If L /2 of the cord is pulled through the hole, determine the speed of the ball when it moves in a circular path at C . Given: W 5lb = L 3f t = h 2f t = g 32.2 ft s 2
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Unformatted text preview: B acos h L = B 48.19 deg = Guesses T B 1 lb = T C 1 lb = v B 1 ft s = v C 1 ft s = C 10 deg = Given T B cos B ( ) W = T B sin B ( ) W g v B 2 L sin B ( ) = T C cos C ( ) W = T C sin C ( ) W g v C 2 L 2 sin C ( ) = W g v B L sin B ( ) W g v C L 2 sin C ( ) = 373...
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This note was uploaded on 08/16/2011 for the course EGN 3321 taught by Professor Christianfeldt during the Spring '08 term at University of Central Florida.

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