A. 143
B. 272
C. 314
D. 722
Identify the increasing order of the angular velocities of the following :<br>1.earth rotating about its own axis<br>2.hour's hand of a clock<br>3.second's hand of a clock<br>4.flywheel of radius 2 m making 300 rpm
Two particles P and Q are located at distance rp and rq respectively from the centre of a rotating disc such that rp > rq
Two solid spheres (A and B) are made of metals of different densities and ρ<sub>A</sub> and ρ<sub>B</sub> respectively. If their masses are equal, the ratio of their moments of inertia {I<sub>B</sub>/I<sub>A</sub>) about their respective diameter is
A uniform rod of length 8a and mass 6m lies on a smooth horizontal surface. Two point masses m and 2m moving in the same plane with speed 2 v and v repectively strike the rod perpendicularly at distances a and 2a from the mid point of the rod in the opposite directions and stick to the rod. The angular velocity of the system immediately after the collision is:
A thin metal disc of radius 0.25 m and mass 2 kg starts from rest and rolls down an Inclined plane. If its rotational kinetic energy is 4 J at the foot of the inclined plane, then its linear velocity at the same point is: