A 12-Kg Crate Rests on a Horizontal Surface and a Boy

question 37

Multiple Choice

A 12-kg crate rests on a horizontal surface and a boy pulls on it with a force that is 30° below the horizontal.If the coefficient of static friction is 0.40, the minimum magnitude force he needs to start the crate moving is:

• A)44 N
• B)47 N
• C)54 N
• D)56 N
• E)71 N

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Definitions:

Monopoly

A market condition where a single firm has exclusive control over a product or service, eliminating competition.

Negative Externalities

Adverse effects suffered by a third party or the public as a result of an economic transaction or activity.

Principal-Agent Problem

At a firm, a conflict of interest that occurs when agents (workers or managers) pursue their own objectives to the detriment of the principals’ (stockholders’) goals. In public choice theory, a conflict of interest that arises when elected officials (who are the agents of the people) pursue policies that are in their own interests rather than policies that would be in the better interests of the public (the principals).

Private Sector

The private sector encompasses businesses and entities that are not owned or operated by the government, operating primarily for profit.