Friction: a Person Is Dragging a Packing Crate of Mass

question 3

Multiple Choice

Friction: A person is dragging a packing crate of mass 100 kg across a rough horizontal floor where the coefficient of kinetic friction is 0.400. He exerts a force F sufficient to accelerate the crate forward. At what angle above horizontal should his pulling force be directed in order to achieve the maximum acceleration?

• A) 21.8°
• B) 27.7°
• C) 30°
• D) 34.5°
• E) 45°

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Definitions:

Marginal Revenue Curve

A graphical representation that shows how marginal revenue varies as the quantity of the product sold changes.

Demand Curve

A graph showing the relationship between the price of a good and the quantity demanded, typically downward-sloping, indicating that demand decreases as price increases.

Monopoly

A market structure characterized by a single seller of a unique product with no close substitutes, allowing them to control market prices.