Physics questions
20027 published questions with worked solutions.
- A dancer is standing on a stool rotating about the vertical axis passing through its centre. She pulls her arm towards the body...
- A particle of mass m is rotating in a circular path of radius r. If L is its angular momentum, the centripetal force acting on...
- A system consists of four particles 1, 2, 3 and 4 gram with their co-ordinate respectively at (2, -3, +1), (1, 2, 3), (4, +2, -1)...
- Two point masses 1/2 kg, 2.5 kg are represented by two position vectors r_1 = i +2 j +3 k and r_2 =- i +3 j +5 k the position...
- Two particles of mass 2 kg and 2.5 kg moves with a velocity of 15 m/sec and 35m/sec. The velocity of their centre of mass moves...
- Two children's one of 20 kg and 35 kg sit at the two ends of a see saw. Each at 3 m from centre of see-saw where the third child...
- A disc has M.I. about an axis passing through its any diameter is 25 kgm^2 . The same disc if rotated about the tangent it has...
- Radius of gyration of disc about any diameter is 25 cm. The same about tangent perpendicular to its plane will be :
- A torque of magnitude 400 Nm acting on a body of mass 4 kg which produces an acceleration of 20 rad/ s^2 . The radius of gyration...
- A body has rotational energy by virtue of its motion is 1000 J has an angular speed of 20 rad/sec in anti clock wise direction....
- A body in rotational motion has a change in angular momentum about 20 S.I. unit for every 4 sec. The rotational force acting on...
- Moment of inertia of thin uniform rod about an axis passing through one end is and perpendicular to its length is 24 kgm^2 . The...
- Radius of gyration of solid sphere about central axis is 2/5 m, it has radius of gyration about tangent at one end is :
- A thin wire of length one meter and uniform linear density 2 ^2 kg m is bend in to a circular loop with centre at O the moment of...
- A solid sphere has a radius of 5 cm and has a surface density of 5 gr/ cm^2 capable of rotating about any diameter, The M.I. of...
- To have a M.I. of rod (thin uniform) about a transverse axis about 10^ -2 kgm^2 its length should be about (Given mass m = 3 kg)
- A body starts rotating from its equilibrium due to action of torque 2.5 Nm. acting on its. It has rotation K.E. after completion...
- A solid cylinder of mass 2 kg and radius 1/2 m rolls down an inclined plane of height 3 m without slipping, the cm of cylinder at...
- A particle of mass 0.2 kg is fired from a certain origin making an angle 30° with the horizontal. After some instant t see the...
- Two different masses 1 kg and 2 kg are moving with velocities 2 m/sec and 8 m/sec towards each other due to gravitational...