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A punch press with flywheel adequate to minimize speed fluctuations produces 120 punching strokes per minute, each providing an average force of 2000 N over a stroke of 50 mm. The press is driven through a gear reducer by a shaft rotating 300 rpm. Overall efficiency is 80%.
(a) What power (W) is transmitted through the shaft?
(b) What average torque is applied to the shaft?
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