A farmer is using a rope and pulley to lift a bucket of water from the bottom of a well that is h, = 9.5 m deep. The farmer uses a force F,= 51 N to pull the bucket of water directly upwards. The total mass of the bucket of water is m; + m, = 3.7 kg. Part (a) Select the correct free body diagram. m,gf F m„gf F mg'm,g m„g m,g F m„gTm,g F m,g m.g F m„gY m,g Submit I give up! Hint Feedback -Draw your own free body diagram and compare it to the ones listed. |-What forces are acting up, what forces are acting vertically down? Part (b) Calculate how much work Wrin J the farmer does on the bucket of water (via the rope) to raise it to ground level. W;= 484.5 / Correct! Part (c) Calculate how much work W, in J gravity does on the bucket filled with water as the farmer lifts it up the well. W. =- 206.1 W = -206.1 Part (d) Calculate the net work Wnet in J done on the bucket of water by the two forces F and F,. Wner = 278.37 Wner = 278.4 Feedback: The answer provided was not correct. We have recognized the following, - Your answer appears to be off by a factor of 2.

A farmer is using a rope and pulley to lift a bucket of water from the bottom of a well that is h, = 9.5 m deep. The farmer uses a force F,= 51 N to pull the bucket of water directly upwards. The total mass of the bucket of water is m; + m, = 3.7 kg. Part (a) Select the correct free body diagram. m,gf F m„gf F mg'm,g m„g m,g F m„gTm,g F m,g m.g F m„gY m,g Submit I give up! Hint Feedback -Draw your own free body diagram and compare it to the ones listed. |-What forces are acting up, what forces are acting vertically down? Part (b) Calculate how much work Wrin J the farmer does on the bucket of water (via the rope) to raise it to ground level. W;= 484.5 / Correct! Part (c) Calculate how much work W, in J gravity does on the bucket filled with water as the farmer lifts it up the well. W. =- 206.1 W = -206.1 Part (d) Calculate the net work Wnet in J done on the bucket of water by the two forces F and F,. Wner = 278.37 Wner = 278.4 Feedback: The answer provided was not correct. We have recognized the following, - Your answer appears to be off by a factor of 2.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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