The following question has two parts. First, answer Part A. Then, answer Part B. Part A: A person pulls the rope in Pulley C by 3 meters and lifts the load by 1 meter. Using the equation for work, how much work is done by the person on the pulley and by the pulley on the load? The person does 600 of work on the pulley, and the pulley does 200J of work on the load. B The person does 200 of work on the pulley, and the pulley does 200J of work on the load C The person does 200 of work on the pulley, and the pulley does 600J of work on the load. D The person does 600 of work on the pulley, and the pulley does 600J of work on the load. Part B: Based on Part A, which statement BEST describes how a pulley affects the total amount of work done by the machine? A A pulley decreases the amount of work done by the person and by the machine. B A pulley does not affect the total work that must be done by the person or the machine. A pulley decreases the amount of work done by the person and increases the amount of work done by the machine. D A pulley increases the amount of work done by the person and decreases the amount of work done by the machine.

Question

The following question has two parts. First, answer Part A. Then, answer Part B. Part A: A person pulls the rope in Pulley C by 3 meters and lifts the load by 1 meter. Using the equation for work, how much work is done by the person on the pulley and by the pulley on the load? The person does 600 of work on the pulley, and the pulley does 200J of work on the load. B The person does 200 of work on the pulley, and the pulley does 200J of work on the load C The person does 200 of work on the pulley, and the pulley does 600J of work on the load. D The person does 600 of work on the pulley, and the pulley does 600J of work on the load. Part B: Based on Part A, which statement BEST describes how a pulley affects the total amount of work done by the machine? A A pulley decreases the amount of work done by the person and by the machine. B A pulley does not affect the total work that must be done by the person or the machine. A pulley decreases the amount of work done by the person and increases the amount of work done by the machine. D A pulley increases the amount of work done by the person and decreases the amount of work done by the machine.

Answer 1

Part A: The correct answer is B. The person does 200J of work on the pulley, and the pulley does 200J of work on the load.Part B: The correct answer is B. A pulley does not affect the total work that must be done by the person or the machine.Explanation:In Part A, the work done by the person on the pulley is calculated using the equation for work, which is Work = Force x Distance. The force applied by the person is 200N, and the distance is 1 meter, so the work done is 200J. The pulley does the same amount of work on the load, which is also 200J.In Part B, the statement that best describes how a pulley affects the total amount of work done by the machine is that a pulley does not affect the total work that must be done by the person or the machine. This is because the work done by the person on the pulley is equal to the work done by the pulley on the load, so the total work remains the same.

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