Systems of Particles and Rotational Motion questions
1884 published questions with worked solutions.
- Two solid spheres (A and B) are made of metals of different densities _A and _B respectively. If their masses are equal, the...
- The radius of gyration of a body about an axis at a distance 6 cm from its centre of mass is 10 cm. Then its radius of gyration...
- The ratio of the radii of gyration of a circular disc about a tangential axis in the plane of the disc, and of a circular ring of...
- A uniform disc of mass M and radius R is mounted on a fixed horizontal axis. A block of mass m hangs from a massless string that...
- A force -F k acts on O, the origin of the coordinate system. The torque about the point (1,-1) is
- A disc of mass 2 kg and radius 0.2 m is rotating with angular velocity 30 rad/s. What is the angular velocity if a mass of 0.25...
- A wheel of moment of inertia 2.5 kg·m² has an initial angular velocity of 40 rad/s. A constant torque of 10 N·m acts on the...
- A binary star consists of two stars A (mass 2.2 M_s) and B (mass 11 M_s), where M_s is the mass of the sun. They are separated by...
- Angular momentum is conserved
- A round disc of moment of inertia I_2 about its axis perpendicular to its plane and passing through its centre is placed over...
- A disc of moment of inertia 5 kg·m² is acted upon by a constant torque of 40 N·m. Starting from rest, the time taken by it to...
- A dancer is standing on a stool, rotating about the vertical axis passing through its centre. She pulls her arms towards her...
- 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...
- The angular momentum of a particle
- A particle of mass m moves in the XY-plane with a velocity v along the straight line AB. If the angular momentum of the particle...
- The angular momentum of a particle describing uniform circular motion is L. If its kinetic energy is halved and its angular...
- Statement 1: The angular momentum under a central force is constant. Statement 2: Inverse square law of force is conservative.
- A particle of mass m=5 units is moving with a uniform speed v=3 2 units in the XOY plane along the line Y=X+4. The magnitude of...
- Angular momentum of a particle rotating with a central force is constant due to
- If there is a change of angular momentum from J to 5J in 5 s, then the torque is
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