A solid cast iron disk of mass 1000kg is rotating at 350rpm. Diameter – McqOptions

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1.	A solid cast iron disk of mass 1000kg is rotating at 350rpm. Diameter of the disk is 1m and time taken to come to stop the disk by brake is 1.6sec.Calculate energy absorbed by the brake if square of radius of gyration is 0.2.
A.	None of the mentioned
B.	134.3kJ
C.	165.3kJ
D.	134.2kJ
Answer» C. 165.3kJ

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