Siti hung different weights on a spring and measured its length. The original length of the spring was 12 cm. When a 100g weight was hung, the length became 15 cm. What would the length be if a 200g weight was hung?
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Worked Solution
Step 1: Calculate the extension for 100g: 15 cm - 12 cm = 3 cm.
Step [2-9]: Calculate the extension for 200g: 3 cm x 2 = 6 cm.
Step [2-9]: Add the extension to the original length: 12 cm + 6 cm = 18 cm.
Correct answer: 18 cm
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