A uniform metre rule is balanced on a fulcrum placed at the 35cm mark by suspending a mass of 120g at the 10cm mark. Calculate the mass of the metre rule.
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Correct Answer: Option D
Explanation:
Clock-wise moment = Anti-clock wise
15 x m = 5 x 10
m = 200g
Clock-wise moment = Anti-clock wise
15 x m = 5 x 10
m = 200g