Standard Science Primary 6 Interactions

Ravi hung different loads on a spring and measured its total length. The original length of the spring was 10 cm.<br><br>Load (g): 20 | 40 | 60<br>Total Length (cm): 12 | 14 | 16<br><br>What would the total length of the spring be if a 100g load is hung on it (within elastic limit)?

A 18 cm
B 30 cm
C 20 cm
D 22 cm
Show Worked Solution

Worked Solution

Step 1: Calculate the extension per 20g load. 12cm - 10cm = 2cm extension for 20g. Step 2: Determine extension for 100g. (100g / 20g) * 2cm = 10cm extension. Step 3: Calculate total length. Original length (10cm) + Extension (10cm) = 20cm.

Correct answer: 20 cm

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