A Frictionless Pulley of Negligible Mass Is Hung from the Ceiling

question 78

Multiple Choice

A frictionless pulley of negligible mass is hung from the ceiling using a rope,also of negligible mass.Two masses,m₁ and m₂ (m₁ < m₂) are connected to the rope over the pulley.The masses are free to drop.The magnitude of the tension T_top is ____ the sum of the tensions T₁ and T₂.

• A)less than
• B)equal to
• C)greater than
• D)unable to tell
• E)depends on T_top

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Definitions:

Reciprocity

The practice of exchanging things with others for mutual benefit, especially privileges granted by one country or organization to another.

Ethical Guidelines

Principles designed to guide behavior and decision-making in a moral and responsible way.

Modern

Pertaining to the present or recent times, often associated with advances in technology, thought, or culture.

Bystander Effect

The social psychological theory that individuals are less likely to offer help to a victim when other people are present.