The table below shows the length of a spring when different weights are hung on it. What is the original length of the spring?
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Worked Solution
Step 1: Calculate the extension per 10g weight (14 - 12 = 2cm).
Step [2-9]: Subtract the extension for 10g from the length at 10g (12 - 2 = 10cm).
Step [2-9]: Original length (at 0g) is 10 cm.
Correct answer: 10 cm
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