Particles (Mass of Each = 0

question 22

Multiple Choice

Particles (mass of each = 0.20 kg) are placed at the 40-cm and 100-cm marks of a meter stick of negligible mass. This rigid body is free to rotate about a frictionless pivot at the 0-cm end. The body is released from rest in the horizontal position. What is the initial angular acceleration of the body?

• A) 12 rad/s²
• B) 5.9 rad/s²
• C) 8.4 rad/s²
• D) 5.4 rad/s²
• E) 17 rad/s²

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Definitions:

Z-score

A measure of how many standard deviations an element is from the mean; used in statistics for standardizing scores.

Symmetrical Area

An area where two sections of a distribution or figure are mirror images of each other, indicating balance around a central point.

Value

The significance or worth of something, often numerical, but can also be qualitative in context such as moral values.

Normal Random Variable

A variable that is distributed according to the normal distribution, characterized by its mean and standard deviation.