The graph shows the extension of a spring when different weights are hung on it. What is the extension when a 150g weight is hung on the spring?
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Worked Solution
Step 1: From the graph, 50g causes 3cm extension.
Step [2-9]: 150g is three times 50g.
Step [2-9]: Extension = 3cm x 3 = 9cm.
Correct answer: 9 cm
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