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Flame SCF 18 Near Chawla Lights Ph-7 Mohali 9888949978

117. A uniform thin rod of length l is suspended from one of its ends and is rotated at f rotations per second. The rotational kinetic energy of the rod will be

(a) 2/3π²f²ml²

(b) 4/3 f²ml²

(c) 4π²f²ml²

(d) Zero

Ans. a

5/5 - (1 vote)

PrevPrevious116. 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 R

NextThe mass of the earth is 6.00 × 10^24 kg and that of the moon is 7.40 × 10^22 kg . The constant of gravitation G=6.67 × 10^-11 N-M^2/kg^2. The potential energy of the system is -7.79 × 10^28 joules . The mean distance between the earth and moon isNext

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