A Constant Force of 15 N in the Negative Y

question 65

Multiple Choice

A constant force of 15 N in the negative y direction acts on a particle as it moves from the origin to the point m. How much work is done by the given force during this displacement?

• A) +45 J
• B) −45 J
• C) +30 J
• D) −30 J
• E) +75 J

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Definitions:

Piston

An engine part that forms the lower section of the combustion chamber. Pressure is exerted on the top of the piston, forcing it down in the cylinder. This movement is transmitted through the connecting rod to the crankshaft. The term piston also refers to pistons used in hydraulic components, such as master cylinders, wheel cylinders, and calipers. The pistons in hydraulic components are used to apply pressure or force.

Bottom Dead Center

The lowest point that a piston reaches in its cylinder during its movement in an engine, opposite of top dead center.

Top Dead Center

The highest point a piston reaches in the cylinder of an engine during its compression stroke.

Overhead Camshaft Engines

Engines where the camshaft is located above the cylinder heads, directly operating the valves, which allows for more precise valve timing.