Primary 6 Science — Interactions Practice | Standard

Standard Science Primary 6 Interactions

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

A 12 cm

B 8 cm

C 20 cm

D 16 cm

Show Worked Solution

Step 1: 60g is 3 times the weight of 20g (60 / 20 = 3). Step [2-9]: Extension is proportional to weight. Step [2-9]: 4 cm x 3 = 12 cm.

Correct answer: 12 cm

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