A Wheel Starts from Rest and Spins with a Constant

question 41

Multiple Choice

A wheel starts from rest and spins with a constant angular acceleration.As time goes on the acceleration vector for a point on the rim:

• A)decreases in magnitude and becomes more nearly tangent to the rim
• B)decreases in magnitude and becomes more nearly radial
• C)increases in magnitude and becomes more nearly tangent to the rim
• D)increases in magnitude and becomes more nearly radial
• E)increases in magnitude but retains the same angle with the tangent to the rim

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Definitions:

Calories

A unit of energy used to quantify the amount of energy provided by foods and beverages.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to and removing waste from the fetus via the umbilical cord.

Third Stage

In various contexts, refers to a specific phase in a multi-stage process; its exact meaning can depend on the process being described.

Acrosome

A vesicle at the tip of a sperm cell that helps the sperm penetrate the egg.