Question

.7. A punch press is fitted with a flywheel capable of
furnishing 3000 N-m of energy during quarter of a

revolution near the bottom dead centre while blanking a hole on
sheet metal. The maximum speed of

the flywheel during the operation is 200 r.p.m. and the speed
decreases by 10% during the cutting

stroke. The mean radius of the rim is 900 mm. Calculate the
approximate mass of the flywheel rim

assuming that it contributes 90% of the energy
requirements

Answer #1

**RESULTS:**

**mass of flywheel =31.996kg**

**WORKING METHODOLOGY:**

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