Two Equal Masses Are Raised at Constant Velocity by Ropes

question 4

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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