A 50-Kg Box Is Resting on a Horizontal Floor

question 116

Multiple Choice

A 50-kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 30.0° below the horizontal is applied to the box. The coefficient of static friction between the box and the
Surface is 0.40, and the coefficient of kinetic friction is 0.30. What is the force of friction on the box?

• A) 250 N
• B) 32 N
• C) 200 N
• D) 220 N
• E) 620 N

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Definitions:

Average Variable Cost

The cost of production that varies with the output level, calculated by dividing the total variable costs by the number of units produced.

Average Product

is the output per unit of input, such as the quantity of goods produced per labor hour, and is used to measure productivity.

Marginal Cost

The expenditure resulting from the creation of an additional unit of a product or service.

Short-run Total Cost

The total of all costs, both fixed and variable, that a firm incurs in producing goods or services in the short run.