A Flywheel Is Initially Roatating at 20 Rad/s and Has

question 29

Multiple Choice

A flywheel is initially roatating at 20 rad/s and has a constant angular acceleration. After 9.0 s it has rotated through 450 rad. Its angular acceleration is:

• A) 3.3 rad/s
• B) 4.4 rad/s
• C) 5.6 rad/s
• D) 6.7 rad/s
• E) 11 rad/s

---

Definitions:

Slope

Measures the steepness or incline of a line, calculated as the ratio of vertical change to horizontal change between any two points on the line.

F Statistic

A ratio of variances used in the analysis of variance (ANOVA) to assess the significance of the difference between group means.

Least Squares Regression

A statistical method used to determine the line of best fit by minimizing the sum of squares of the differences between observed values and those predicted by a linear model.

P-value

The probability of obtaining test results at least as extreme as the results actually observed, under the assumption that the null hypothesis is correct.