Standard Science Primary 6 Interactions

A spring has an original length of 10 cm. When a 100g weight is hung on it, its length becomes 12 cm. What will be its total length if a 200g weight is hung on it?

A 14 cm
B 4 cm
C 24 cm
D 15 cm
Show Worked Solution

Worked Solution

Step 1: Original length = 10 cm. Step 2: Extension for 100g = 12 cm - 10 cm = 2 cm. Step 3: Extension for 200g = 2 cm × 2 = 4 cm. Step 4: Total length = Original length + Extension = 10 cm + 4 cm = 14 cm.

Correct answer: 14 cm

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