Podcast
Questions and Answers
What is the main difference between mass and weight?
Which equation represents Hooke's Law?
What happens when an object exceeds its elastic limit?
How does the total extension of springs in series compare to those in parallel?
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If a spring constant is high, what does that indicate about the spring's behavior?
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What is the gravitational field strength on Earth used in weight calculations?
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In order to find the gradient of a graph, what calculation should be performed?
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What kind of objects behave elastically?
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Study Notes
Mass vs. Weight
- Mass is the amount of matter in an object.
- Mass does not change with location.
- Weight is the force of gravity acting on an object.
- Weight changes with location.
- Weight = Mass x Gravitational field strength
Stretching
- Elastic behavior: Objects return to their original shape after a force is removed.
- Plastic behavior: Objects do not return to their original shape after a force is removed.
- Elastic limit: The point where an object starts to behave plastically.
Hooke's Law
- The extension of a spring is directly proportional to the force applied, as long as the elastic limit is not exceeded.
- This means if a force is tripled, the extension triples (up to the elastic limit).
- F = k x e (Force = Spring constant x extension)
Combining Springs
Springs in Series
- Total extension = extension of one spring x number of springs.
- Each spring experiences the same force.
Springs in Parallel
- Total extension = extension of one spring / number of springs.
- The springs share the force equally.
Graphs
- Graphs should have labeled axes (e.g., force and extension).
- The graph should have a line of best fit.
- The gradient of the line is equal to the spring constant.
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Description
Test your knowledge on key concepts of mass and weight, as well as the principles of Hooke's Law in physics. This quiz covers the definitions, relationships, and behaviors of materials under force, including elastic and plastic behavior. Brush up on combining springs in series and parallel to solidify your understanding.
