In the Figure,a Uniform Ladder of Weight 200 N and Length

question 58

Multiple Choice

In the figure,a uniform ladder of weight 200 N and length 10 m leans against a perfectly smooth wall.A firefighter of weight 600 N climbs a distance x up the ladder.The coefficient of static friction between the ladder and the floor is 0.50.What is the maximum value of x for which the ladder will not slip?

• A)3.9 m
• B)5.0 m
• C)6.0 m
• D)6.3 m
• E)8.4 m

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Definitions:

Secondary Circular Reactions

A stage in Piaget's theory of cognitive development where infants (aged about 4-8 months) repeat interesting or enjoyable actions centered on their own body.

Deferred Imitation

The ability to replicate an action or behavior after a delay, indicating memory and cognitive development.

Sensorimotor Conditioning

A learning process in young children that involves mastering the integration of sensory information with motor responses, fundamental to cognitive development.

Organized Patterns

Structured sequences or arrangements of ideas, actions, or events that follow a consistent and recognizable order.