A Spring Whose Natural Length Is 20 Cm Is Stretched

question 99

Multiple Choice

A spring whose natural length is 20 cm is stretched to a length of 35 cm by a 2-N force. Find the work done in stretching the spring.

• A) 0.15 J
• B) 30 J
• C) 0.7 J
• D) 40 J
• E) 0.3 J

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Definitions:

Marginal Social Benefit

The benefit gained by society from the production of one more unit of a good or service.

Marginal Social Cost

The total cost society bears for the production of an additional unit of a good or service, including both private costs and any externalities.

Marginal Social Benefit

The extra advantage to the community that comes from the consumption or production of an additional unit of a product or service.

Pollution Emissions

The release of pollutants into the environment, usually from industrial processes, vehicles, or other sources, which can harm human health and the ecosystem.