A 30-Kg Block Is on a Frictionless Horizontal Surface

question 37

Multiple Choice

A 3.0-kg block is on a frictionless horizontal surface. The block is at rest when, at t = 0, a force (magnitude P = 2.0 N) acting at an angle of 22° above the horizontal is applied to the block. At what rate is the force P doing work at t = 2.0 s?

• A) 2.3 W
• B) 2.0 W
• C) 1.4 W
• D) 1.7 W
• E) 1.2 W

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Definitions:

Direct Labor-Hours

The collective number of hours that employees, who are directly engaged in the production of a good or the provision of a service, have worked.

Variable Manufacturing Overhead

Costs that vary with manufacturing output, including items like indirect materials and utilities required for production processes.

Direct Labor-Hours

The total hours of labor directly involved in producing goods or services, which is often used as a base for allocating overhead costs.

Variable Manufacturing Overhead

Costs that vary with the level of manufacturing activity, including items like indirect materials and utilities.