Two Equal Masses Are Raised at Constant Velocity by Ropes

question 18

Multiple Choice

Two equal masses are raised at constant velocity by ropes that run over pulleys, as shown below. Mass B is raised twice as fast as mass A. The magnitudes of the forces are F_A and F_B, while the power supplied is respectively P_A and P_B. Which statement is correct?

• A) F_B = F_A; P_B = P_A.
• B) F_B = F_A; P_B = 2 P_A.
• C) F_B = 2 F_A; P_B = P_A.
• D) F_B = 2 F_A; P_B = 2 P_A.
• E) P_A = F_A; P_B = F_B.

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Definitions:

Left Common Carotid

The artery located on the left side of the body that supplies blood to the head and neck.

Brachiocephalic Artery

A major blood vessel originating from the aortic arch that supplies blood to the right arm and the head and neck.

Left Subclavian Artery

A major artery that arises from the aortic arch, supplying blood to the left arm and parts of the brain and chest.

Arteries

Blood vessels that carry oxygenated blood away from the heart to the body tissues, with the exception of the pulmonary arteries.