A Uniform Ladder Is 10 M Long and Weighs 400

question 21

Multiple Choice

A uniform ladder is 10 m long and weighs 400 N.It rests with its upper end against a frictionless vertical wall.Its lower end rests on the ground and is prevented from slipping by a peg driven into the ground.The ladder makes a 30 ° angle with the horizontal.The force exerted on the wall by the ladder is:

• A)47 N
• B)74 N
• C)120 N
• D)350 N
• E)460 N

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Definitions:

Market Demand Curve

A graphical representation showing the relationship between the price of a good and the total quantity demanded by all consumers in the market.

Magazine Circulation

The total number of copies of a magazine that are distributed to subscribers and retailers within a specific period.

Consumer Surplus

The distinction between the aggregate amount consumers are inclined and capable of paying for a service or product and what they actually disburse.

Minimum Imposed Price

A price floor set by the government or a regulatory body, below which the price of a good or service cannot fall.