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115. A fly wheel of moment of inertia I is rotating at n revolutions per sec. The work needed to double the frequency would be

(a) 2π²In²

(b) 4π²In²

(c) 6π²In²

(d) 8π²In²

Ans. c

(38)

5/5 - (2 votes)

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Next116. If L, M and P are the angular momentum, mass and linear momentum of a particle respectively which of the following represents the kinetic energy of the particle when the particle rotates in a circle of radius RNext

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