Standard Science Primary 6 Interactions

Study the table below showing the length of a spring when different weights are hung on it. What is the original length of the spring?

A 10 cm
B 12 cm
C 16 cm
D 14 cm
Show Worked Solution

Worked Solution

Step 1: Observe the pattern of extension. For every 10g added, the length increases by 2 cm (14-12=2). Step [2-9]: Subtract the extension caused by the first 10g from the length at 10g (12cm - 2cm = 10cm). Step [2-9]: The original length is 10 cm.

Correct answer: 10 cm

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