A Massless Meter Stick on a Horizontal Frictionless Table Top

question 21

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 at the 60-cm mark. 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 not be in the same direction as and have magnitude
• E) must not be directed opposite to and have magnitude

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Definitions:

Direct Examination

The questioning of a witness by the party who called the witness to testify in a court of law, focusing on the case's facts without leading questions.

Pre-Trial Process

The series of steps taken in legal proceedings before the trial officially starts, including discovery, pre-trial conferences, and motion hearings.

Long Delays

Extended periods of waiting time beyond the expected or scheduled, often causing inconvenience or impacting plans.

Necessary

Essential items or actions required for a specific purpose or to achieve a certain outcome.