How far from the other end should the pivot be
A see-saw consists of a pivot and a heavy (24 kg) uniform plank which is 1.8 m long. A 12kg box is placed at one end of the plank. How far from the other end should the pivot be so that the plank is balanced?
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A skier of mass 69.3 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him a distance of 59.0 m up a 30.4° slope (assumed frictionless) at a constant speed of 1.97 m/s?
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A 4.0 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 4.5 m/s2, find the force exerted by the rope on the bucket of water.
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A 5050.0-kg truck moving east at 5.76 m/s collides with a 995.0-kg car moving west at 50.1 m/s. The collision takes place over a time interval of 0.294 s. The car and the truck stick together after the collision. Find the force (in N) of the car o
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