A uniform metre rule is balanced on a fulcrum p... - WAEC Physics 2016 Question
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.
A
60g
B
80g
C
120g
D
200g
correct option: d
Clock-wise moment = Anti-clock wise
15 x m = 5 x 10
m = 200g
15 x m = 5 x 10
m = 200g
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