A spring has an original length of 10 cm. When a 50 g weight is hung on it, the length becomes 12 cm. What will the total length be if a 150 g weight is hung on it?
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Worked Solution
Step 1: Calculate extension for 50g (12cm - 10cm = 2cm).
Step [2-9]: For 150g, the extension is 3 times 50g (2cm x 3 = 6cm).
Step [2-9]: Total length = Original length + Extension = 10cm + 6cm = 16cm.
Correct answer: 16 cm
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