Standard Science Primary 6 Interactions

Two identical springs, P and Q, are hung from a ceiling. A 100g weight is hung on P, and a 200g weight is hung on Q. Which of the following is correct?

A Spring Q will have a greater extension than Spring P.
B Both springs will have the same extension.
C The original length of Spring Q will increase.
D Spring P will have a greater extension than Spring Q.
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Worked Solution

Step 1: The extension of a spring is proportional to the force (weight) acting on it. Step 2: Spring Q has a heavier weight (200g) than P (100g). Step 3: Therefore, Spring Q will stretch more.

Correct answer: Spring Q will have a greater extension than Spring P.

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