Two Equal Masses Are Raised at Constant Velocity by Ropes

question 29

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:

Trickle-Down Redistribution

An economic theory suggesting that benefits provided to the wealthy or upper economic classes will eventually "trickle down" to benefit poorer members of society.

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A ceremonial feast practiced among indigenous peoples of the Pacific Northwest Coast of America, characterized by the generous giving of gifts which reciprocally establish or reinforce social status.

Basic Unit

The fundamental component or building block within a structured set, often referring to the simplest division in a system's hierarchy.

Cooperative Work

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