Systems of Part...

Identify the correct statement for the rotational motion of a rigid body

Two point objects of masses 1.5 g and 2.5 g respectively are at a distance of 16 cm apart, the centre of gravity is at a distance x from the object of mass 1.5 g where x is

A system consists of 3 particles each of mass m located at points ( 1, 1), (2, 2) and (3, 3). The co-ordinates of the centre of mass are

Two particles of masses 1 kg and 2 kg are located at x₁ = 0, y₁ = 0 and x₂ = 1, y₂ = 0

Three bricks each of length L, and mass M are arranged as shown from the wall. The distance of the centre of mass of the system from the wall is

The angular velocity of a wheel increases from 100 rps to 300 rps in 10 seconds. The number of revolutions made during that time is

In a bicycle the radius of rear wheel is twice the radius of front wheel. If r_F and r_r are the radius, v_F and v_r are speeds of top most points of wheel, then

The moment of inertia of a body about a given axis is 2.4 kg–m². To produce a rotational kinetic energy of 750 J, an angular acceleration of 5 rad/s² must be applied about that axis for

If the earth shrinks such that its mass does not change but radius decreases to one quarter of its original value then one complete day will take

A flywheel gains a speed of 540 r.p.m. in 6 sec. Its angular acceleration will be