Podcast
Questions and Answers
What is the main difference between mass and weight?
What is the main difference between mass and weight?
- Weight is measured in kilograms, while mass is measured in newtons.
- Mass changes based on location, while weight does not.
- Mass is the amount of matter, while weight is the force of gravity on that matter. (correct)
- Weight is constant, but mass varies with gravitational strength.
Which equation represents Hooke's Law?
Which equation represents Hooke's Law?
- W = m * g
- F = k * e (correct)
- F = m * g
- W = k * e
What happens when an object exceeds its elastic limit?
What happens when an object exceeds its elastic limit?
- It returns to its original shape.
- It regains more force.
- It starts behaving plastically and permanently deforms. (correct)
- It loses all its mass.
How does the total extension of springs in series compare to those in parallel?
How does the total extension of springs in series compare to those in parallel?
If a spring constant is high, what does that indicate about the spring's behavior?
If a spring constant is high, what does that indicate about the spring's behavior?
What is the gravitational field strength on Earth used in weight calculations?
What is the gravitational field strength on Earth used in weight calculations?
In order to find the gradient of a graph, what calculation should be performed?
In order to find the gradient of a graph, what calculation should be performed?
What kind of objects behave elastically?
What kind of objects behave elastically?
Flashcards
Mass
Mass
The amount of matter in an object, measured in kg/g.
Weight
Weight
The force of gravity acting on an object, measured in N.
Elastic Limit
Elastic Limit
The point where an object deforms permanently.
Hooke's Law
Hooke's Law
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Spring constant
Spring constant
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Springs in Series
Springs in Series
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Springs in Parallel
Springs in Parallel
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Gradient of a graph
Gradient of a graph
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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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