Physics questions
20027 published questions with worked solutions.
- A particle of mass 'm' is rotating in a circle of radius 'r' having angular momentum 'L'. Then the centripetal force will be...
- A ring and a disc roll on horizontal surface without slipping with same linear velocity. If both have same mass and total kinetic...
- Three-point masses each of mass 'M' are placed at the corners of an equilateral triangle of side 'a'. The moment of inertia of...
- A grindstone acquires angular speed of 90 rpm after 6 second, starting from rest. The angular acceleration of the grindstone in...
- A solid sphere Has mass 'M' and radius 'R'. Its moment of inertia about a parallel axis passing through a point at a distance R2...
- Two discs A and B of equal mass and thickness have densities 6800 kg/m^3 and 8500 kg/m^3 respectively. The ratio of their moments...
- A cord is wound round the circumference of a wheel of radius 'r'. The axis of the wheel is horizontal and moment of inertia about...
- A motor cycle racer takes a round with speed 20 m/s on a curved road of radius 40 m. The leaning angle of motor cycle with...
- A thin wire of length 'L' and uniform linear mass density 'm' is bent into a circular loop. The moment of inertia of this loop...
- A thin circular ring of mass 'M' and radius 'r' is rotating about its axis with an angular speed ' '. Two particles each of mass...
- Moment of inertia of a solid sphere about its diameter is 'I'. It is then casted into 27 small spheres of same diameter. The...
- A wheel of radius 2 cm is at rest on the horizontal surface. A point P on the circumference of the wheel is in contact with the...
- A pendulum has length of 0.4 m and maximum speed 4 m/s. When the length makes an angle 30^ with the horizontal, its speed will be...
- A heavy mass is attached at one end of a thin wire and whirled in a vertical circle. The chances of breaking the wire are maximum...
- A wheel is at rest horizontal position. Its M.I. about vertical axis passing through its centre is 'I'. A constant torque ' '...
- A solid cylinder of mass 'M' and radius 'R' rolls down a smooth inclined plane about its own axis and reaches the bottom with...
- A disc of mass 10 kg and radius 0.1 m is rotating at 120 r. p. m. A retarding torque brings it to rest in 10 s. If the same...
- A solid sphere of mass 'M' and radius 'R' is rotating about its diameter. A disc of same mass and radius is also rotating about...
- A bucket containing water is revolved in a vertical circle of radius 'r'. To prevent the water from falling down, the minimum...
- A rotating body has angular momentum 'L'. If its frequency of rotation is halved and rotational kinetic energy is doubled, its...