A Flywheel Rotating at 640 Rev/min Is Brought to Rest

question 23

Multiple Choice

A flywheel rotating at 640 rev/min is brought to rest with a uniform deceleration of 2.0 rad/s². How many revolutions does it make before coming to rest?

• A)320
• B)17
• C)160
• D)360
• E)180

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Definitions:

F-distribution

A probability distribution used in statistics to model the ratio of variances among variables, often utilized in the analysis of variance (ANOVA).

F-test

A statistical test used to compare the variances of two populations to ascertain if they come from distributions with equal variances.

Population Variances

Population variances measure the degree to which individuals within a population differ from the population mean, indicating the distribution's spread.

T-tests

A type of inferential statistic used to determine if there is a significant difference between the means of two groups, which may be related in certain features.