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:

---

Definitions:

Nervous System

The network of nerve cells and fibers that transmits nerve impulses between parts of the body, coordinating its actions and sensory information.

Endorphins

Natural chemicals in the body that interact with the brain's receptors to reduce pain and boost pleasure, resulting in a feeling of well-being.

Dendrite

The branched extensions of a neuron that receive signals from other neurons or sensory receptors.

Myelin

A fatty substance that forms a sheath around the axons of neurons, increasing the speed at which impulses propagate.