Physics questions
20027 published questions with worked solutions.
- From a uniform wire, two circular loops are made (i) P of radius r and (ii) Q of radius nr. If the moment of inertia of Q about...
- Five particles of mass 2 kg each are attached to the rim of a circular disc of radius 0.1 m and negligible mass. Moment of...
- If radius of solid sphere is doubled by keeping its mass constant, then
- Statement 1: A judo fighter in order to throw his opponent on to the mattries, he initially bends his opponent and then rotates...
- Ratio of rotational K.E. to rolling K.E. of a solid sphere is
- A body having moment of inertia of 3 kg-m^2 rotating with an angular velocity of 2 rad/s has the same kinetic energy as a mass of...
- Disc is rolling on the horizontal with constant velocity 2 m/s. If mass of the disc is 400 g, then total kinetic energy of disc is
- A rod having length L, density D and area of cross-section A is rotating about the centre with velocity and perpendicular to its...
- Two bodies having moments of inertia I_1 and I_2 (I_1 > I_2) have same angular momentum. If E_1 and E_2 are their rotational...
- The radius of gyration of a disc of mass 100 g and radius 5 cm about an axis passing through its centre of gravity and...
- The radius of gyration depends on [RPET 1986]
- The ratio of the radii of gyration of a circular disc to that of circular ring, each of same mass and radius, around their...
- Radius of gyration of a uniform circular disc about an axis passing through its centre of gravity and perpendicular to its plane...
- A fly wheel of moment of inertia 3 10^2 kg m^2 is rotating with uniform angular speed of 4.6 rad s^ -1 . If a torque of 6.9 10^2...
- A solid cylinder of mass 50 kg and radius 0.5 m is free to rotate about the horizontal axis. A massless string is wound round the...
- The torque acting is 2000 Nm with an angular acceleration of 2 rad/s^2. The moment of inertia of body is [MH-CET 2004]
- A disc of mass 2 kg and diameter 2 m is performing rotational motion. Find the work done, if the disc is rotating from 300 r.p.m....
- The instantaneous angular position of a point on a rotating wheel is given by the equation (t) = 2t^3 - 6t^2. The torque on the...
- A string is wound round the rim of a mounted flywheel of mass 20 kg and radius 20 cm. A steady pull of 25 N is applied on the...
- A ring rolls along an inclined plane without slipping. What fraction of the total kinetic energy will be rotational?