A spring has an original length of 12 cm. When a 50g load is added, the length becomes 15 cm. What will the extension be if a 100g load is added?
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Worked Solution
Step 1: Extension = New Length - Original Length. For 50g, extension = 15cm - 12cm = 3cm.
Step [2-9]: Extension is proportional to load. Since 100g is double 50g, the extension will be double.
Step [2-9]: 3cm x 2 = 6cm.
Correct answer: 6 cm
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