Question on: WAEC Physics - 2011
A body of mass 120g placed at the 10cm mark on a uniform metre rule makes the rule settle horizontally on a fulcrum places at 35cm mark. Calculate the mass of the rule
A
60g
B
80g
C
120g
D
200g
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Correct Option: D
m = (\frac{25 \times 120}{15})
= 200g
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