Two Equal Masses Are Raised at Constant Velocity by Ropes

question 13

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 FA and FB, while the power supplied is respectively PA and PB. Which statement is correct?

• A)FB = FA; PB = PA.
• B)FB = FA; PB = 2 PA.
• C)FB = 2 FA; PB = PA.
• D)FB = 2 FA; PB = 2 PA.
• E)PA = FA; PB = FB.

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