In the Figure,a 700-Kg Crate Is on a Rough Surface

question 55

Multiple Choice

In the figure,a 700-kg crate is on a rough surface inclined at 30°.A constant external force P = 5600 N is applied horizontally to the crate.As the force pushes the crate a distance of 3.00 m up the incline,the speed changes from 1.40 m/s to 2.50 m/s.How much work does gravity do on the crate during this process?

• A)-10,300 J
• B)-3400 J
• C)+10,300 J
• D)+3400 J
• E)zero

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Definitions:

Variable Cost

Costs that vary directly with the level of production or sales volume, such as materials and labor.

Fixed Cost

A cost that does not change with an increase or decrease in the amount of goods or services produced or sold.

Manufacturing Overhead

All factory-related costs that are incurred during the manufacturing process, excluding direct materials and direct labor.