For a Body to Be Equilibrium Under the Combined Action

question 20

Multiple Choice

For a body to be equilibrium under the combined action of several forces:

• A)all the forces must be applied at the same point
• B)all of the forces are composed of pairs of equal and opposite forces
• C)any two of these forces must be balanced by a third force
• D)the sum of the torques about any point must equal zero
• E)the lines of action of all the forces must pass through the center of gravity of the body

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Definitions:

Rejection Region

In hypothesis testing, the range of values for which the null hypothesis is considered unlikely and is therefore rejected.

Chi-Square Distribution

A statistical distribution that is used to determine the goodness of fit of an observed distribution to an expected one under the null hypothesis.

Critical Value(s)

Specific point(s) on a distribution curve that define the threshold for rejecting the null hypothesis in hypothesis testing.

Level Of Significance

A threshold in hypothesis testing below which the null hypothesis is rejected, indicating statistical significance.