Problem 1: 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 F1 = 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 F m„gY m,g mg m,g Submit Hint Feedback I give up! Hints: 2 for a 0% deduction. Hints remaining: 0 Feedback: 0% deduction per 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 W;in 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 X Attempts Remain 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 Feedback: The answer provided was not correct. We have recognized the following, - Your answer appears to be off by a factor of 2. Wne: = 278.4 X Attempts Remain All content e 2021 Expert TA, LLC
Problem 1: 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 F1 = 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 F m„gY m,g mg m,g Submit Hint Feedback I give up! Hints: 2 for a 0% deduction. Hints remaining: 0 Feedback: 0% deduction per 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 W;in 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 X Attempts Remain 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 Feedback: The answer provided was not correct. We have recognized the following, - Your answer appears to be off by a factor of 2. Wne: = 278.4 X Attempts Remain All content e 2021 Expert TA, LLC
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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Transcribed Image Text:Problem 1: 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, + my = 3.7 kg.
Part (a) Select the correct free body diagram.
mg
m„gf F
mg'm,g
m„g
mg
F
m„gTm,g
F
m,g
F,
m„gY m,g
m,g
Submit
Hint
Feedback
I give up!
Hints: 2 for a 0% deduction. Hints remaining: 0
Feedback: 0% deduction per 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
X Attempts Remain
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
Wne = 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.
X Attempts Remain
All content e 2021 Expert TA, LLC
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