A Wheel Rotates About a Fixed Axis with a Constant

question 24

Multiple Choice

A wheel rotates about a fixed axis with a constant angular acceleration of 4.0 rad/s². The diameter of the wheel is 40 cm. What is the linear speed of a point on the rim of this wheel at an instant when that point has a total linear acceleration with a magnitude of 1.2 m/s²?

• A) 39 cm/s
• B) 42 cm/s
• C) 45 cm/s
• D) 35 cm/s
• E) 53 cm/s

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Definitions:

Slightly Different Speed

A variation in velocity, indicating a small but noticeable change in the rate of motion compared to another object or compared to a previous state.

Neutrons

Subatomic particles found in the nucleus of an atom, having no electric charge and a mass about equal to that of protons.

Protons

Positively charged subatomic particles found within the nucleus of an atom, contributing to the atom's charge and atomic number.