A circular disk of uniform thickness 20 mm, radius 100 mm and mass 20 – McqOptions

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1.	A circular disk of uniform thickness 20 mm, radius 100 mm and mass 20 kg is used a s flywheel. If it rotates at 600 rpm, kinetic energy of flywheel is Joule is
A.	395
B.	790
C.	1580
D.	3160
Answer» B. 790

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