A Massless Meter Stick on a Horizontal Frictionless Table Top

question 53

Multiple Choice

A massless meter stick on a horizontal frictionless table top is pivoted at the 80-cm mark.A force is applied perpendicularly to the end of the stick at 0 cm, as shown.A second force (not shown) is applied perpendicularly to the stick at the 100-cm end of the stick.The forces are in the plane of the table top.If the stick does not move, the force exerted by the pivot on the stick:

• A)must be zero
• B)must be in the same direction as and have magnitude
• C)must be directed opposite to and have magnitude
• D)must be in the same direction as and have magnitude
• E)must be directed opposite to and have magnitude

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Definitions:

Restatement (Second)

A collection of model legal rules and principles meant to clarify the common law in the United States, not binding but influential.

Law of Contracts

A set of laws that govern the formation, execution, and enforcement of agreements between parties.

Bilateral

Pertaining to or involving two sides, parties, or countries, often used in the context of agreements or contracts that require obligations from both parties.

Unilateral

A mistake that is the result of an error by one party about a material fact, that is, a fact that is important in the context of the particular contract.