Standard Science Primary 6 Interactions

A spring extends by 4 cm when a 20g load is hung on it. What is the extension of the same spring when a 60g load is hung on it?

A 16 cm
B 8 cm
C 12 cm
D 4 cm
Show Worked Solution

Worked Solution

Step 1: 60g is three times 20g. Step [2-9]: Extension is proportional to the load (within elastic limit). Step [2-9]: 4 cm x 3 = 12 cm.

Correct answer: 12 cm

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