In the figure, a smooth pulley of negligible weight is suspended by a spring balance. Masses of $1 kg$ and $5 kg$ are attached to the opposite ends of a string passing over the pulley and move with some acceleration. During their motion, the spring balance reads a weight of

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Spring balance reading is equal to 2 T tension in the string = 2 m 1 m 2 m 1 + m 2 = 2 × 5 × 1 6 = 5 3 Kgf reading of spring balance= 2 T = 2 × 5 3 = 10 3 Kgf

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