664_Dynamics 11ed Manual

664_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 19 Solution: Guesses ω 1 1 rad s = 2 1 rad s = θ 1deg = Given W l 2 1 2 W g l 2 3 1 2 = e 1 l 2 l = W l 2 sin () 1 2 W g l 2 3 2 2 = 1 2 Find 1 2 , , = 1 2 6.95 4.86 rad s = 29.34 deg = hl sin = h 0.980 ft = *Problem 19-52 The pendulum consists of a solid ball of weight W b and a rod of weight W r . If it is released from rest when 1 = 0 ° , determine the angle 2 after the ball strikes the wall, rebounds, and the pendulum swings up to the point of momentary rest. Given: W b 10lb = e 0.6 = L 2ft = W r 4lb = r 0.3ft = g 32.2 ft s 2 = Solution: I A W r g L 2 3 2 5 W b g r 2 + W b g Lr + 2 + = Guesses 1 1 rad s = 2 1 rad s = 2 10deg = Given
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