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Questions and Answers
How does mass differ from weight?
How does mass differ from weight?
Mass is the amount of matter in an object, measured in kg, while weight is the gravitational force on that mass, measured in newtons.
What happens to an elastically-behaving object when the force is removed?
What happens to an elastically-behaving object when the force is removed?
It returns to its original shape.
What does Hooke's Law state about the relationship between force and extension in springs?
What does Hooke's Law state about the relationship between force and extension in springs?
Hooke's Law states that the extension of a spring is directly proportional to the force applied, up to its elastic limit.
How do you calculate the total extension of identical springs connected in series?
How do you calculate the total extension of identical springs connected in series?
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What is the significance of the elastic limit?
What is the significance of the elastic limit?
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Explain how you would find the gradient of a graph representing Hooke's Law.
Explain how you would find the gradient of a graph representing Hooke's Law.
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Describe how springs behave when placed in parallel.
Describe how springs behave when placed in parallel.
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What is meant by a 'line of best fit' in a graph?
What is meant by a 'line of best fit' in a graph?
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Study Notes
Mass and Weight
- Mass is the amount of matter in an object.
- Mass does not change when the location changes.
- Weight is the force of gravity pulling on an object.
- Weight changes depending on the location.
- Weight = Mass x Gravitational field strength
Stretching
- An elastically behaving object returns to its original shape when the force is removed.
- A plastically behaving object deforms and stays in its new shape after the force is removed.
- The elastic limit is the point of permanent deformation.
Hooke's Law
- Hooke's Law states that the extension of a spring is directly proportional to the force applied (up to the elastic limit).
- This means that if you apply three times the force, the spring will stretch three times further (while within its elastic limit).
- The relationship between force and extension is linear; force is directly proportional to the extension.
- Hooke's Law equation: Force = Spring Constant x Extension
Combining Springs (Series and Parallel)
- Springs in Series: When springs are connected end-to-end. The total extension is equal to the extension of one spring multiplied by the number of springs.
- Springs in Parallel: When springs are connected side-by-side. The total extension is equal to the extension of one spring divided by the number of springs.
Graphs
- Graphs should have labeled axes with equal scales.
- The line of best fit should be a straight line.
- The gradient of the graph is the spring constant.
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Description
Nke a bụ ajụjụ ọnụ gbasara iwu Hooke, ibu, na akụrụngwa. Ajụjụ ndị a ga-enyere gị ịghọta mmetụta nke agbara na nhazi nke ihe. Mụta na tụnyere iwu ndị a na ndụ kwa ụbọchị.
