Two identical springs, P and Q, are joined end-to-end. A 100g weight is hung at the bottom. If spring P extends by 2 cm, what is the total extension of the combined springs?
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Worked Solution
Step 1: In a series arrangement (end-to-end), each spring experiences the full weight.
Step [2-9]: Both identical springs P and Q will extend by 2 cm each.
Step [2-9]: Total extension = 2cm + 2cm = 4cm.
Correct answer: 4 cm
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