In the Figure, a Uniform Ladder of Weight 200 N

question 19

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:

Marginal Revenue

The additional income from selling one more unit of a good; it is the change in total revenue that comes from selling an additional unit.

Demand Schedule

A table that shows the quantity of a good or service that consumers are willing to buy at various prices.

Coefficient of Price Elasticity

A measure of the responsiveness of the quantity demanded of a good to a change in its price.

Demand Schedule

A table or graph showing the quantity of a product or service demanded at various prices.