VECTOR MECH...,STAT.+DYN.(LL)-W/ACCESS
12th Edition
ISBN: 9781260265453
Author: BEER
Publisher: MCG
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Chapter 14.2, Problem 14.47P
Four small disks A, B, C, and D can slide freely on a frictionless horizontal surface. Disks B, C, and D are connected by light rods and are at rest in the position shown when disk B is struck squarely by disk A, which is moving to the right with a velocity v0 = (38.5 ft/s)i. The weights of the disks are WA = WB = WC = 15 lb, and WD = 30 lb. Knowing that the velocities of the disks immediately after the impact are vA = vB = (8.25 ft/s)i, vC = vCi, and vD = vDi, determine (a) the speeds vC and vD, (b) the fraction of the initial kinetic energy of the system which is dissipated during the collision.
Fig. P14.47
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Two steel balls, each of mass m = 1.84 kg, are welded to a light rod of length L = 545 mm and negligible mass and are initially at rest on a
smooth horizontal surface. The distance b = 111 mm. A horizontal force of magnitude F = 27 N is suddenly applied to the rod as shown.
Determine (a) the magnitude of the instantaneous acceleration a of the mass center G and (b) the magnitude of the corresponding rate
0 at which the angular velocity of the assembly about G is changing with time.
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Chapter 14 Solutions
VECTOR MECH...,STAT.+DYN.(LL)-W/ACCESS
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