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Water is drawn from a well in a bucket tied to the end of a rope whose other end wraps around a solid cylinder of mass 50 kg and diameter 25 cm. As this cylinder is turned with a crank, the rope raises the bucket. The mass of a bucket of water is 20 kg. Someone cranks the bucket up and then lets go of the crank, and the bucket of water falls down to the bottom of the well. Without friction or air resistance, what is the angular acceleration of the 50-kg cylinder?
A horizontal force of 2 N does nothing to move a large book along a desk, but a force of 1.8 N can keep the book sliding at constant speed on the same desk. Explain
Point A to point B is 300miles horizontally. A plane travels 500 mph. there is a crosswind blowing north east at a 45 degree angle north of east at 150 mph. what will be the plane's velocity relative to the ground
A classroom demonstration is done with an Atwood machine. The masses are m1 = 1.0 kg and m2 = 1.10 kg. what is the acceleration of gravity at that place
You launch a rock from the origin (0,0) with an initial speed of 50 m/s at an angle of ?o=30° from horizontal. How far horizontally will the rock travel before it lands
A spring oscillator is designed with a mass of 0.258 kg. It operates while immersed in a damping fluid, selected so that the oscillation amplitude will decrease to 1.00% of its initial value in 8.34 s
A drag racer starts from rest and accelerates for 12.3 s with a constant acceleration until it has travelled 400 m. What is the stopping distance for the drag racer
A crane drops a 1.0 kg steel ball onto a steel plate. The balls speed just before impact is 2.0m/s. what is the bounce back speed right after the impact
A crate is held at rest on a frictionless 53 degree ramp by a rope parallel to the incline. If the tension in the rope is 7000 N, what is the mass of the crate
Three 1.50-V cells, each with an internal resistance of 0.0500?, are connected in series to form a battery with a current of 0.850A in each cell. Find the current in the external circuit
An elevator moving upward approaches the top floor of a high rise building and begins to slow down at the rate of 2.00 m/s2. Calculate the apparent weight of the passenger if her mass is 60.0 kg
In a game of billiards, the cue ball is traveling eastward when it strikes a second ball that is initially at rest. What was the speed of the cue ball prior to the collision
A ball m=1kg rolling without slipping on a flat surface with v=.1m/s strikes the wall after which v=.08m/s
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