Standard Science Primary 6 Interactions

A spring has an original length of 12 cm. When a 50g load is added, the length becomes 15 cm. What will the extension be if a 100g load is added?

A 24 cm
B 3 cm
C 18 cm
D 6 cm
Show Worked Solution

Worked Solution

Step 1: Extension = New Length - Original Length. For 50g, extension = 15cm - 12cm = 3cm. Step [2-9]: Extension is proportional to load. Since 100g is double 50g, the extension will be double. Step [2-9]: 3cm x 2 = 6cm.

Correct answer: 6 cm

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