Question:medium

A balance is made using a uniform metre scale of mass 100 g and two plates each of mass 200 g fixed at the two ends of the scale and the balance is pivoted at 45 cm mark of the scale. The error when 300 g weight is placed in the plate at 0 cm to weigh vegetables placed in the plate at 100 cm is

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For problems involving balances and levers, the principle of moments is key: the sum of clockwise torques about the pivot must equal the sum of counter-clockwise torques. Torque is calculated as Force $\times$ Lever Arm. Remember to account for the weight of the lever itself, acting at its center of mass.

Updated On: Mar 30, 2026

36.4 g
63.6 g
200 g
100 g

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The Correct Option is D

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