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.
Estimate the maximum temperature in Seattle that will allow snow to fall at the top of Mt. Rainier, assuming a wet adiabatic lapse rate of 6.5 K/km (i.e. the temperature decreases upward by 6.5 K per 1 km). The summit of Mt. Rainier is at 4400 met
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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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