A Body Oscillates with Simple Harmonic Motion Along the X $\pi$

question 26

Multiple Choice

A body oscillates with simple harmonic motion along the x axis. Its displacement varies with time according to the equation x = 5 sin ( $\pi$ t + $\pi$ /3) . The phase (in rad) of the motion at t = 2 s is:

• A)7 \(\pi\)/3.
• B)( \(\pi\)/3.)
• C)( \(\pi\))
• D)5 \(\pi\)/3.
• E)2 \(\pi\)

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Definitions:

Sample Mean

The average value of a set of characteristics (numbers) from a subset of a population, used to estimate the population mean.

Null Hypothesis

The default position in statistical hypothesis testing that assumes no relationship or effect between the variables being studied.

P-value

The likelihood of getting test outcomes that are as significant as or more so than the ones actually seen, presuming the null hypothesis is true.

Level of Significance

The probability of rejecting the null hypothesis in a statistical test when the hypothesis is true; often represented by alpha (α).