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136_Dynamics 11ed Manual

# 136_Dynamics 11ed Manual - A is controlled by a motor at B...

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Engineering Mechanics - Dynamics Chapter 12 a A s A v A 2 s A 2 h 2 + a B s A 2 h 2 + s A v A 2 s A = a A a B s A 2 h 2 + s A v B 2 h 2 s A 3 = Problem 12-194 Vertical motion of the load is produced by movement of the piston at A on the boom. Determine the distance the piston or pulley at C must move to the left in order to lift the load a distance h . The cable is attached at B , passes over the pulley at C , then D , E , F , and again around E , and is attached at G . Given: h 2f t = Solution: Δ s F h = L 2 s C 2 s F + = Δ s C 2 Δ s F Δ s Δ s F Δ s C 2ft = Problem 12-195
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Unformatted text preview: A is controlled by a motor at B such that when the collar is at s A , it is moving upwards at v A and slowing down at a A . Determine the velocity and acceleration of the cable as it is drawn into the motor B at this instant. Given: d 4 ft = s A 3 ft = v A 2 − ft s = a A 1 ft s 2 = Solution: L s A 2 d 2 + s B + = Guesses v B 1 ft s = a B 1 ft s 2 = 134...
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