Standard Science Primary 6 Interactions

A spring extends by 2 cm for every 20 g of weight added. If the original length of the spring is 10 cm, what will be the total length of the spring when a 60 g weight is hung on it?

A 16 cm
B 12 cm
C 18 cm
D 14 cm
Show Worked Solution

Worked Solution

Step 1: Calculate total extension (60g / 20g = 3 units of extension; 3 x 2cm = 6cm). Step [2-9]: Add extension to original length (10cm + 6cm = 16cm).

Correct answer: 16 cm

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