A Person Is Dragging a Packing Crate of Mass 100

question 30

Multiple Choice

A person is dragging a packing crate of mass 100 kg across a rough horizontal floor where the coefficient of kinetic friction is 0.400.He exerts a force F sufficient to accelerate the crate forward.At what angle above horizontal should his pulling force be directed in order to achieve the maximum acceleration?

• A) 21.8°
• B) 27.7°
• C) 30°
• D) 34.5°
• E) 45°

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Definitions:

Facial Nerve

The seventh cranial nerve, responsible for controlling most of the muscles of facial expression and conveying taste sensations from the anterior two-thirds of the tongue.

Oculomotor Nerve

The third cranial nerve, controlling most eye movements, the response of pupils to light, and the eyelids.

Pupil Size

The diameter of the pupil, which changes in response to light intensity and certain emotional states to regulate the amount of light entering the eye.

Adjusts

Modifies or alters something in order to achieve accuracy or maintain optimal functionality.