A Uniform Meter Stick Is Pivoted to Rotate About a Horizontal

question 79

Multiple Choice

A uniform meter stick is pivoted to rotate about a horizontal axis through the 25-cm mark on the stick. The stick is released from rest in a horizontal position. The moment of inertia of a uniform rod about an axis perpendicular to the rod and through the center of mass of the rod is given by (1/12) ML². Determine the magnitude of the initial angular acceleration of the stick.

• A) 17 rad/s²
• B) 13 rad/s²
• C) 15 rad/s²
• D) 19 rad/s²
• E) 23 rad/s²

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Definitions:

Df

Abbreviation for degrees of freedom, indicating the number of values in a final calculation of a statistic that are free to vary.

Critical Value

A threshold value in hypothesis testing, beyond which the null hypothesis is rejected, determined by the chosen significance level.

Df

Df, or degrees of freedom, often used in statistical analysis, is the number of independent pieces of information available to estimate another piece of information.

Mean Square

A statistical measure used primarily in the context of ANOVA, representing the average of the squares of differences from the mean, indicative of variance.