A Wheel Is Spinning About a Fixed Axis in a Clockwise

question 28

Multiple Choice

A wheel is spinning about a fixed axis in a clockwise direction at 20.0 revolutions per minute. There is a spot of paint on the wheel located 20.0 cm from the axis of rotation. Disregarding the phase of the motion and with the origin located at the center of the wheel, which of the following is a description of the motion of the paint spot projected onto a given direction in the plane of motion?

• A)x(t) = (20.0 cm)cos[(2.09 s^-1)t]
• B)x(t) = (40.0 cm)cos[(0.333 s^-1)t]
• C)x(t) = (20.0 cm)cos[(0.333 s^-1)t]
• D)x(t) = (20.0 cm)cos[(20.0 s^-1)t]
• E)x(t) = (40.0 cm)cos[(126 s^-1)t]

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Definitions:

Range

In statistics, the difference between the highest and lowest scores in a distribution, indicating dispersion or variability.

Inferential Statistic

A set of methods used to make inferences or predictions about a larger population based on data collected from a smaller sample.

P Value

A statistical measure that helps scientists determine the significance of their research results, reflecting the likelihood that the observed data could occur by chance.

Mean

A statistical measure that represents the arithmetic average of a set of numbers.