A circular disc of uniform thickness 10 mm, radius 100 mm and mass 10 – McqOptions

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1.	A circular disc of uniform thickness 10 mm, radius 100 mm and mass 10 kg is used as a flywheel. If it rotates a 600 rpm the kinetic energy of flywheel is
A.	98.70 J
B.	49.35 J
C.	24.67 J
D.	197.39 J
Answer» B. 49.35 J

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