A Push of Magnitude P Acts on a Box of Weight

question 18

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 friction force on the box due to the floor is equal to

• A) P sin θ
• B) P cos θ
• C) 0
• D) P cos θ + W
• E) P + W

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Definitions:

Photographs

Images captured by a camera that record visual information on a light-sensitive surface or digital medium.

Spinal Reflexes

Automatic responses to stimuli that are mediated by the spinal cord, bypassing the brain's involvement.

Painful Stimulus

A stimulus that is physically uncomfortable or hurtful, often triggering a reflexive withdrawal or response to stop the pain.

Motor Response

The physical reaction of the body to a stimulus, involving movement of muscles.