Jun Jie hung a 50g weight on a spring and the extension was 2 cm. What would be the extension if he replaced the weight with a 150g weight, assuming the spring does not exceed its elastic limit?
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Worked Solution
Step 1: Establish the relationship (50g : 2cm).
Step 2: Determine the scale (150g is 3 times 50g).
Step 3: Calculate the new extension (2cm x 3 = 6cm).
Correct answer: 6 cm
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