Velocity and acceleration of the washer
The small washer in Fig. 2 slides down the cord OA. When it is at the midpoint, its speed is 200 mm/s and its acceleration is 10 mm/s2. Express the velocity and acceleration of the washer at this point in terms of its cylindrical components.
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A 215 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.810, and the
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A 5.00-g bullet is fired horizontally into a 1.20-kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.20. The bullet remains embedded in the block, which is observed to slide 0.230 m
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