MHT CET 2024 Physics question
A meter scale is supported on a wedge at its centre of gravity. A body of weight 'w' is suspended from the 20 cm mark and another weight of 25 gram is suspended from 74 cm mark balances it and the meter scale remains perfectly horizontal. Neglecting the weight of the meter scale, the weight of the body is
Answer: (C)
Solution
The metre scale's centre of gravity is at the 50 cm mark, where the wedge is. For rotational equilibrium the torques about the wedge must balance. Distance of the body from the wedge: cm. Distance of the 25 g weight from the wedge:
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