335_Dynamics 11ed Manual

335_Dynamics 11ed Manual - B . Determine the ramp’s speed...

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Engineering Mechanics - Dynamics Chapter 15 Given: m T 19 Mg = v B1 10 km hr = m B 75 Mg = v T1 15 km hr = k 600 kN m = g 9.81 m s 2 = Solution: At maximum stretch the velocities are the same. Guesses v 2 1 km hr = δ 1m = Given momentum m T v T1 m B v B1 + m T m B + () v 2 = energy 1 2 m T v T1 2 1 2 m B v B1 2 + 1 2 m T m B + () v 2 2 1 2 k 2 + = v 2 Find v 2 , () = v 2 11.01 km hr = 0.221 m = Problem 15-50 The free-rolling ramp has a weight W r . The crate, whose weight is W c , slides a distance d from rest at A , down the ramp to
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Unformatted text preview: B . Determine the ramp’s speed when the crate reaches B . Assume that the ramp is smooth, and neglect the mass of the wheels. Given: W r 120 lb = a 3 = b 4 = W c 80 lb = d 15 ft = g 32.2 ft s 2 = Solution: θ atan a b ⎛ ⎝ ⎞ ⎠ = Guesses v r 1 ft s = v cr 1 ft s = 333...
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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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