626_Dynamics 11ed Manual

626_Dynamics 11ed Manual - Engineering Mechanics - Dynamics...

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Engineering Mechanics - Dynamics Chapter 18 Given W a 2 b 2 + 2 1 2 W g a 2 b 2 + 3 ω 2 W a 2 + = Find () = v A b = v A 11.9 ft s = Problem 18-50 The assembly consists of pulley A of mass m A and pulley B of mass m B . If a block of mass m b is suspended from the cord, determine the block’s speed after it descends a distance d starting from rest. Neglect the mass of the cord and treat the pulleys as thin disks. No slipping occurs. Given: m A 3kg = m B 10 kg = m b 2kg = d 0.5 m = r 30 mm = R 100 mm = g 9.81 m s 2 = Solution: Guess v b 1 m s = Given 00 + 1 2 m A r 2 2 v b r 2 1 2 m B R 2 2
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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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