Standard Science Primary 6 Interactions

A spring is 20 cm long at rest. When a weight of 200g is added, it stretches to 24 cm. What is the extension produced by each 100g weight?

A 12 cm
B 2 cm
C 4 cm
D 8 cm
Show Worked Solution

Worked Solution

Step 1: Total extension = New length - Original length = 24cm - 20cm = 4cm. Step [2-9]: This 4cm extension is caused by 200g. Step [2-9]: Extension per 100g = 4cm / 2 = 2cm.

Correct answer: 2 cm

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