A Uniform Sign Is Supported Against a Wall at Point

question 34

Multiple Choice

A uniform sign is supported against a wall at point P as shown in the figure.If the sign is a square 0.40 m on a side and its mass is 4.0 kg,what is the magnitude of the horizontal force that the wall at P experiences?

• A) 20 N
• B) 0.00 N
• C) 7.8 N
• D) 98 N

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Definitions:

Latency Stage

A phase in Freud’s psychosexual development occurring between ages 6 and puberty, where sexual urges are repressed, and children focus on social and intellectual skills.

Postpone Gratification

The ability to resist the temptation for an immediate reward and wait for a later reward.

Personality

A unique set of emotional, thought, and behavioral patterns that define an individual's typical responses to situations.

Pleasure Principle

A theory in psychoanalytic psychology proposing that people seek pleasure and avoid pain to satisfy biological and psychological needs.