A Pulley with Radius R Is Free to Rotate on a Horizontal

question 15

Multiple Choice

A pulley with radius R is free to rotate on a horizontal fixed axis through its center.A string passes over the pulley.Mass m₁ is attached to one end and mass m₂ is attached to the other.The portion of the string attached to m₁ has tension T₁ and the portion attached to m₂ has tension T₂.The magnitude of the total external torque, about the pulley center, acting on the masses and pulley, considered as a system, is given by:

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Definitions:

Arachidic Acid

A saturated fatty acid with a 20-carbon chain, found in certain plant oils and the fat components of some animals.

Carbon Atoms

The fundamental building blocks of all organic molecules, characterized by having six protons in their nucleus.

Melting Point

The temperature at which a solid becomes a liquid at atmospheric pressure.

Intermolecular Forces

Forces of attraction or repulsion which act between neighboring particles, such as atoms or molecules, affecting the physical properties of substances.