262_Dynamics 11ed Manual

262_Dynamics 11ed Manual - The propelling action is...

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Engineering Mechanics - Dynamics Chapter 14 v B F N v' Find v B F N , v' , () = v B 42.2 ft s = F N 50.6 lb = v' 26.2 ft s 2 = Problem 14-29 When the block A of weight W 1 is released from rest it lifts the two weights B and C each of weight W 2 . Determine the maximum distance A will fall before its motion is momentarily stopped. Neglect the weight of the cord and the size of the pulleys. Given: W 1 12 lb = W 2 15 lb = a 4f t = Solution: Guess y 10 ft = Given W 1 y 2 W 2 a 2 y 2 + a () 0 = y Find y () = y 3.81 ft = Problem 14-30 The catapulting mechanism is used to propel slider A of mass M
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Unformatted text preview: The propelling action is obtained by drawing the pulley attached to rod BC rapidly to the left by means of a piston P . If the piston applies constant force F to rod BC such that it moves it a distance d , determine the speed attained by the slider if it was originally at rest. Neglect the mass of the pulleys, cable, piston, and rod BC . Units Used: kN 10 3 N = Given: M 10 kg = F 20 kN = d 0.2 m = Solution: F d + 1 2 M v 2 = v 2 F d M = v 28.284 m s = 260...
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