A torque meter is calibrated to reference standards of mass, length and time each with 5 % accuracy. After calibration, the measured torque with this torque meter will have net accuracy of

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Dimensional formula for Torque τ = ML 2 T - 2 Now the percentage error in torque can be calculated by τ % = 1 × ∆ M M + 2 × ∆ L L + 2 × ∆ T T × 100 ⇒ τ % = 25 %

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