In the Figure, a Uniform Ladder 12 Meters Long Rests

question 40

Short Answer

In the figure, a uniform ladder 12 meters long rests against a vertical frictionless wall. The ladder weighs 400 N and makes an angle θ of 79° with the floor. A man weighing 790 N climbs slowly up the ladder. When he has climbed to a point that is 7.8 m from the base of the ladder, the ladder starts to slip. What is the coefficient of static friction between the floor and the ladder?

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Definitions:

Promotional Element

A component of the marketing mix that involves activities to increase awareness, interest, and sales of a product or service, such as advertising, sales promotions, and public relations.

Product Life Cycle

Describes the stages a product goes through from when it is first introduced into the market until it declines or is removed from the market; the stages include introduction, growth, maturity, and decline.

Promotional Mix

The blend of different marketing strategies and tactics – such as advertising, public relations, personal selling, and sales promotion – used to reach the target audience, create awareness, and generate sales or achieve marketing objectives.

Decline

A phase in the product life cycle or market trend where sales or interest starts decreasing over time.