Podcast
Questions and Answers
What are the two essential conditions for work to be done in physics?
What are the two essential conditions for work to be done in physics?
- Force and displacement (correct)
- Force and acceleration
- Displacement and friction
- Force and mass
Which equation correctly defines work in physics?
Which equation correctly defines work in physics?
- Work = Force + Displacement
- Work = Force - Displacement
- Work = Force / Displacement
- Work = Force * Displacement (correct)
What unit is used to measure work in physics?
What unit is used to measure work in physics?
- Watts
- Joules (correct)
- Newtons
- Pascals
If a force is applied but there is no displacement, what can be said about the work done?
If a force is applied but there is no displacement, what can be said about the work done?
In what situation can work be considered to be done?
In what situation can work be considered to be done?
Flashcards
What is work in physics?
What is work in physics?
When a force causes an object to move a certain distance.
Is work done when you push a box across the floor?
Is work done when you push a box across the floor?
Yes, work is done because a force is applied (pushing) and the object is moving (displacement).
Is work done when you push a heavy box that doesn't move?
Is work done when you push a heavy box that doesn't move?
No, work is not done because the box is not moving. Even though you're applying a force, there's no displacement.
How is work calculated?
How is work calculated?
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What is the unit of work?
What is the unit of work?
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Study Notes
Work
- Work is the product of force and displacement in the same direction
- Conditions for work:
- Force must be present
- Displacement must occur
- Force and displacement must be in the same direction
- Units of work: Joules (J)
- Formula for work: W = F × d
- Where:
- W = Work
- F = Force
- d = Displacement
- Where:
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