Standard Science Primary 6 Interactions

Ravi used a spring balance to measure the weight of an object. He found that the spring inside stretched by 4 cm. What would happen if he used the same spring balance to measure a heavier object?

A The spring will not stretch at all.
B The spring will stretch less than 4 cm.
C The spring will stay at 4 cm.
D The spring will stretch more than 4 cm.
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Worked Solution

Step 1: A spring balance works based on elastic spring force. Step [2-9]: The extension of the spring is directly proportional to the force (weight) applied. Step [2-9]: A heavier object applies more force, leading to a greater extension.

Correct answer: The spring will stretch more than 4 cm.

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