132_Dynamics 11ed Manual

132_Dynamics 11ed Manual - Given: L 16 ft = a 3 ft = v B 4...

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Engineering Mechanics - Dynamics Chapter 12 0 2 s A a A 2 v A 2 + a 2 s A 2 + 2 s A 2 v A 2 a 2 s A 2 + () 3 a B + = v B a B Find v B a B , () = v B 8 ft s = a B 6.8 ft s 2 = * Problem 12–188 The cord of length L is attached to the pin at C and passes over the two pulleys at A and D . The pulley at A is attached to the smooth collar that travels along the vertical rod. When s B = b , the end of the cord at B is pulled downwards with a velocity v B and is given an acceleration a B . Determine the velocity and acceleration of the collar A at this instant.
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Unformatted text preview: Given: L 16 ft = a 3 ft = v B 4 ft s = b 6 ft = a B 3 ft s 2 = Solution: s B b = Guesses v A 1 ft s = a A 1 ft s 2 = s A 1 ft = Given L 2 a 2 s A 2 + s B + = 2 s A v A a 2 s A 2 + v B + = 2 s A a A 2 v A 2 + a 2 s A 2 + 2 s A 2 v A 2 a 2 s A 2 + ( ) 3 a B + = s A v A a A Find s A v A , a A , ( ) = s A 4ft = v A 2.50 ft s = a A 2.44 ft s 2 = 130...
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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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