Standard Science Primary 6 Interactions

Chandra hung different weights on a spring and measured its total length. The results are shown in the table below. What is the original length of the spring?

A 20 cm
B 15 cm
C 10 cm
D 12 cm
Show Worked Solution

Worked Solution

Step 1: Calculate the extension per 20g of weight. 12cm - 11cm = 1cm for 20g. Step [2-9]: For a 20g weight, length is 11cm. Subtract the 1cm extension to find the original length. Step [2-9]: 11cm - 1cm = 10cm.

Correct answer: 10 cm

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free