2(ii)
A metre rod made of copper and steel as shown in the diagram. Weights of copper and steel are 10 N and 8 N respectively.
(a) On which part does the centre of gravity lie (0 to 50 or 50 to 100).
(b) Justify your answer.
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(a) Centre of gravity of the given rod lie between 0 to 50.
(b) In equilibrium ,
(F1) x distance (l1) = (F2) x distance (l2)
As, F1 > F2
Hence, l1 < l2
Therefore, centre of gravity lies between 0 to 50.