Physics, 25.02.2021 18:30 Svetakotok
A worker lifts a weight w by pulling down on a rope with a force F. The upper pulley is attached to the ceiling by a chain, and the lower pulley is attached to the weight by another chain. In terms of w, find the tension in each chain and the magnitude of the force F if the weight is lifted at constant speed. Include the free body diagram or diagrams you used to determine your answers. Assume that the rope, pulleys, and chains all have negligible weights.
Answers: 3
Physics, 22.06.2019 08:30, khohenfeld0
What properties of a moving object are used in determining the object's energy of motion
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Physics, 22.06.2019 15:30, tiffuuu
At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.
Answers: 1
A worker lifts a weight w by pulling down on a rope with a force F. The upper pulley is attached to...
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