A System of Blocks and a Frictionless Pulley Is Shown

question 68

Multiple Choice

A system of blocks and a frictionless pulley is shown in the figure.Block A has a mass of 2.0 kg and is on a rough horizontal surface for which μ_s = 0.40 between the surface and block A.The rope pulls horizontally on block A.Block C has a mass of 1.0 kg.An external force P = 23.0 N,applied vertically to block A,maintains the system at rest as shown in the figure.What is the friction force on block A?

• A) 6.3 N
• B) 6.9 N
• C) 7.5 N
• D) 5.7 N
• E) 5.1 N

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Definitions:

Predetermined Overhead Rate

An estimated rate used to allocate manufacturing overhead costs to products or services.

Manufacturing Cost

All expenses directly related to the production of goods, including raw materials, labor, and factory overhead.

Machine-Hours

A measure of production time, indicating the total hours that machines are operating in the manufacturing process.

Manufacturing Overhead

The indirect factory-related costs that are incurred when producing a product, including costs related to management, utilities, and equipment depreciation.