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Figure shows a lever ABC supported with a spring of force constant 2400 N/m. The lever weighs 2N/cm and is hinged at B. When

Figure shows a lever ABC supported with a spring of force constant 2400 N/m. The lever weighs 2N/cm and is hinged at B. When a load 100 N is applied at A, the system will be in equilibrium with spring horizontal and BC part of lever is vertical. If the extension of the spring is m, then a is k- 2400 N/m io cm B 100 N 20 cm

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