Angie Says That an Object Is in Equilibrium If the Net

question 17

Multiple Choice

Angie says that an object is in equilibrium if the net torques about the center of mass is zero. Robbie says that an object is in equilibrium if the sum of external forces is zero. Which one, if either, is correct?

• A) Both are correct: an object is in equilibrium if either condition holds.
• B) Neither is correct: both conditions must hold simultaneously.
• C) Neither is correct: the net external force and the net external torque about any axis must be zero.
• D) Neither is correct: an object is in equilibrium only if its velocity is zero in all coordinate systems.
• E) Both are correct: if the sum of the external forces is zero, the net torque about any axis is automatically zero, and vice versa.

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Definitions:

Cognitive Dissonance

The mental discomfort experienced by an individual who holds two or more contradictory beliefs, values, or ideas at the same time.

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Sales Tools

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The application of scientific knowledge for practical purposes, especially in industry, to invent useful things or to solve problems.