Systems of Particles and Rotational Motion questions
1884 published questions with worked solutions.
- Let F be the force acting on a particle having position vector r, and be the torque of this force about the origin. Then
- A thin circular ring of mass M and radius R rotates about an axis through its centre and perpendicular to its plane, with a...
- The position of a particle is given by r= i+2 j- k and its linear momentum is given by p = 3 i+4 j-2 k. Then its angular...
- A thin uniform circular disc of mass m and radius R is rotating in a horizontal plane about an axis passing through its centre...
- A uniform disc of mass 2 kg and radius 15 cm is revolving around the central axis at 4 rad/s⁻¹. The linear momentum of the disc...
- The motion of planets in the solar system is an example of conservation of
- A particle is moving in the x-y plane with a constant velocity along a line parallel to the x-axis, away from the origin. The...
- A boy and a man carry a uniform rod of length L horizontally in such a way that the boy gets 14 of the load. If the boy is at one...
- A particle of mass 1 kg is projected with an initial velocity 10 ms⁻¹ at an angle of projection 45° with the horizontal. The...
- A symmetrical body is rotating about its axis of symmetry, its moment of inertia about the axis of rotation being 1 kg·m² and its...
- A force of 200 N acts tangentially on the rim of a wheel of radius 25 cm. Find the torque.
- What is the magnitude of torque acting on a particle moving in the xy-plane about the origin if its angular momentum is 4.0 t?
- The vector product of the force (F) and the distance (r) from the centre of action represents
- As a disc-like reel with massless thread unrolls itself while falling vertically downwards, the acceleration of its fall is
- If the earth shrinks such that its mass does not change but its radius decreases to one-quarter of its original value, then one...
- A mass m is moving with a constant velocity along a line parallel to the x-axis, away from the origin. Its angular momentum with...
- A solid sphere is rotating in free space. If the radius of the sphere is increased, keeping the mass the same, which one of the...
- If the torque on a body executing rotational motion is zero, which of the following quantities remains constant?
- If the torque is zero, what will be the value of angular momentum?
- A body is rolling down an inclined plane. Its translational and rotational kinetic energies are equal. The body is
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