A spring has an original length of 10 cm. When a 50g weight is hung on it, its length becomes 12 cm. What will be the length of the spring if a 150g weight is hung on it? (Assume the spring is within its elastic limit).
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Worked Solution
Step 1: Calculate extension for 50g: 12cm - 10cm = 2cm.
Step 2: Calculate extension for 150g: (150 / 50) * 2cm = 6cm.
Step 3: Calculate new length: Original length + Extension = 10cm + 6cm = 16cm.
Correct answer: 16 cm
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