A Push of Magnitude P Acts on a Box of Weight

question 13

Multiple Choice

A push of magnitude P acts on a box of weight W as shown in the figure.The push is directed at an angle θ below the horizontal,and the box remains a rest.The box rests on a horizontal surface that has some friction with the box.The normal force on the box due to the floor is equal to

• A)W.
• B)W + P.
• C)W + P cos θ.
• D)W + P sin θ.
• E)W - P sin θ.

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Definitions:

Population Standard Deviation

A measure of the dispersion or variability of all data points in an entire population, signifying the spread from the population mean.

Sample Standard Deviations

Measures of the dispersion or variation in a sample data set, indicating how spread out the data points are from the mean.

Construct

A concept or theoretical variable that is not directly observable, but is used to describe or explain behavior in psychological and sociological research.

S Chart

A statistical process control chart used to monitor the variability of process performance.