1.

The moment of inertia of a body about a given axis is 1.2kgm2. Initially, the body at rest. In order to produce a rotational kinetic energy of 1500 joule, an angular acceleration of 25radian/sec2 must be applied about the axis for duration of ___________

A. 4s
B. 2s
C. 8s
D. 10s
Answer» C. 8s


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