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Questions and Answers
In the example of a ball being held above the ground and then dropped, what type of work is done by the gravitational force as it falls?
In the example of a ball being held above the ground and then dropped, what type of work is done by the gravitational force as it falls?
- No work is done
- Negative work
- Positive work (correct)
- Work cannot be determined
If the ball is thrown upwards, what type of work is done by the gravitational force?
If the ball is thrown upwards, what type of work is done by the gravitational force?
- No work is done
- Positive work
- Work cannot be determined
- Negative work (correct)
When does a force do positive work?
When does a force do positive work?
- When it has a component in the direction of the displacement at the point of application (correct)
- When it has no component in the direction of the displacement
- When it has a component opposite to the displacement at the point of application
- When it has a component perpendicular to the displacement
When does a force do negative work?
When does a force do negative work?
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What is the simplest form of work for a constant force aligned with the direction of motion?
What is the simplest form of work for a constant force aligned with the direction of motion?
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