As Shown in the Figure, a Woman Is Straining to Lift

question 42

Multiple Choice

As shown in the figure, a woman is straining to lift a large crate, but without success because it is too heavy. We denote the forces on the crate as follows: P is the magnitude of the upward force being exerted on the crate by the person, C is the magnitude of the vertical contact force on the crate by the floor, and W is the weight of the crate. How are the magnitudes of these forces related while the person is trying unsuccessfully to lift the crate?

• A)P + C = W
• B)P + C < W
• C)P + C > W
• D)P = C

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Definitions:

Parents

Caregivers of offspring in their own species, responsible for providing support, education, and nurturing.

Sleep Terrors

Episodes of screaming, intense fear and flailing while asleep, often paired with difficulty fully waking up.

Non-REM Sleep

A type of sleep divided into stages characterized by the absence of rapid eye movements, including deep sleep stages where the body repairs and regrows tissues.

Early Childhood

A period in human development from birth to about 8 years old, characterized by rapid physical and cognitive development.