218_Dynamics 11ed Manual

218_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Unformatted text preview: Engineering Mechanics - Dynamics Chapter 13 Given: W = 2 lb θ 1 = 90 deg θ' = 4 rad s b = 2 ft Solution: θ = θ1 r = bθ r' = bθ' ⎛ rθ' ⎞ ⎟ ⎝ r' ⎠ ψ = atan ⎜ NB = 1 lb Guesses P = 1 lb Given −NB sin ( ψ) + P cos ( ψ) − W = P sin ( ψ) + NB cos ( ψ) = ⎛ NB ⎞ ⎜ ⎟ = Find ( NB , P) ⎝P⎠ ⎛ W ⎞ ( −r θ' 2 ) ⎜⎟ ⎝g⎠ ⎛ W ⎞ ( 2r' θ' ) ⎜⎟ ⎝g⎠ ψ = 57.52 deg NB = 3.084 lb *Problem 13-96 The forked rod is used to move the smooth particle of weight W around the horizontal path in the shape of a limacon r = a + b cosθ. If θ = ct2, determine the force which the rod exerts on the particle at the instant t = t1. The fork and path contact the particle on only one side. Given: W = 2 lb a = 2 ft b = 1 ft c = 0.5 rad 2 s 216 P = 2.751 lb ...
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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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