A 400-Kg Box Sits Atop a 10

question 32

Multiple Choice

A 4.00-kg box sits atop a 10.0-kg box on a horizontal table. The coefficient of kinetic friction between the two boxes and between the lower box and the table is 0.600, while the coefficient of static friction between these same surfaces is 0.800. A horizontal pull to the right is exerted on the lower box, as shown in the figure, and the boxes move together. What is the friction force on the UPPER box?

• A) 19.3 N to the right
• B) 19.3 N to the left
• C) 23.5 N to the right
• D) 31.4 N to the right
• E) 31.4 N to the left

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Definitions:

Gross Margin

A financial metric indicating the difference between revenue and the cost of goods sold, divided by revenue, expressed as a percentage, showing the efficiency of a company in managing its production and distribution costs.

Cost Of Sales

The direct costs attributable to the production of the goods sold by a company.

Separated-Entity Income Statements

Financial documents that detail the revenues, expenses, and net income of an entity as distinct from its owners or affiliated entities.

Entity Approach

A method in consolidated financial statements where the economic activities of a parent company and its subsidiaries are treated as a single economic entity.