17. A 2 kg around with an angular velocity of 12 angular momentum is about cente

Question

17. A 2 kg around with an angular velocity of 12 angular momentum is about center of the circle is 6.0 kg.m kg m ls, c) 12 kg m is, d) 48 kg m2lsz, e) 72 kg m is -mur 8. The angular speed of the car travelling at 13.9 m/s and rounding a circular turn of radius 110 m 0.13 9. The rotational inertia of the wheel does not depend upon: a) diameter, b) mass, co I mr distribution of mass, d) speed of rotation, material composition An is one in which a) momentum is conserved but kinetic energy inelastic collision is conserved, b) total mass is not conserved but momentum is conserved, c) neither kinetic energy and momentum is conserved, d) is conserved but kinetic energy is not conserved, e) total impulse is equal to change in kinetic energy a1. A certain wheel has rotational inertia of 12 kg m2. As it turns through 5 rev, its angular velocity increases from 5 rad/s to 6 rads. The net torque is constant it value is: a) 0.016 Nm, b) 0.18 Nm, c) 0.57 Nm, d) 2.1 Nm, e) 3.6 Nm A hoop has a mass of 200 gms and a radius 25 cm. Its rolls without slipping along evel ground at 500 cm/s. total kinetic energy in Joules is: a) 2.5 J, b) 5 J, c) 10 J, d) 250 J. e need to know angular velocity. k-mv 2- The rotational inertia of the wheel that has a kinetic energy of 12.200 J when these rev -21Trud I min 60 Dec

Explanation / Answer

7. Angular momentum = Mr2w = 2X0.5X0.5X12 = 6 Ans

8. Angular speed w = v/R = 13.9/110 = 0.13 rad/s2

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