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(i) State the function of a flywheel.

(ii) A punching machine carries out 5 holes per minute. Each hole of 40 mm diameter in 40 mm thick plate requires 10 N/m of energy/mm2 of the sheared area. The punch has a stroke of 100 mm. Find the power of the motor required, if the mean speed of the flywheel is 25 m/s. If the total fluctuation of speed is not to exceed 4% of the men sped, determine the mass of the flywheel.           

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(ii) Mass of the flywheel is

 

 

 

 

 

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