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Investigating Elasticity - Coggle Diagram
Investigating Elasticity
There are different ways to investigate the relationship between force and extension for a spring. In this required practical activity, it is important to:
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Aim of the experiment
To investigate the relationships between force and extension for a spring, and the work done in extending the spring.
Method
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Hang a 100 g slotted mass carrier - weight 0.98 newtons (N) - from the spring. Measure and record the new length of the spring.
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Repeat step 7 until you have added a total of 1,000 g.
Analysis
For each result, calculate the extension:
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Plot a line graph with extension on the vertical axis, and force on the horizontal axis. Draw a suitable line or curve of best fit.
Identify the range of force over which the extension of the spring is directly proportional to the weight hanging from it.
For the region where extension is proportional to force, find the gradient of the line. The spring constant, k, is the reciprocal of this gradient.
Work done = force × distance moved. Here, the work done in extending the spring is given by the area under the line on the graph.
The energy transferred to a spring's elastic store is given by the equation: Compare the area under the line, from the origin up to a point, with the calculation of the energy stored in the spring for that extension