Physics questions
20027 published questions with worked solutions.
- Moment of inertia of disc of 1 kg about its central axis is 5 kgm^2 . Its moment of inertia about a parallel axis at its edge...
- If the frequency of rotation of a pedestal fan increases (about horizontal axis of rotation) from 5 r.p.s. to 7 r.p.s. in sec....
- An uniform rod of length 2 m is suspended from one end such that it is free to rotate about the axis perpendicular to length...
- A rotating system experiences a change in angular speed from 3 rad/sec to 5 rad/sec the rotational change in kinetic energy of...
- A ballet dancer spins about a vertical axis on a turn table at 120 rpm with her arms out stretched. When her arm are folded the...
- A ring of mass 10 kg and radius 0.25 the rolls on the horizontal surface at the rate of 0.5 m/sec. The K.E. of such a ring is :
- A particle performs a rotational motion with an angular moment 4, SI-unit. If the angular frequency of the particle is double and...
- The moment of inertia of a meter scale of mass 0.6 kg about an axis perpendicular to the scale and located at 20 cm on the scale...
- A circular disc of radius R and thickness 1/6^ th of radius has moment of inertia I, about an axis passing through its centre and...
- The position of particle is represented as r =2 i +2 j - k and linear momentum p =3 i +4 j -2 k . The angular moment is found to...
- A wheel of man 10 kg has a moment of inertia of 160 kgm^2 about its own axis, the radius of gyration of wheel about any diameter...
- A solid spherical ball rolls on the inclined plane without slipping. How much in % it has rotational energy as compare to its...
- A disc of mass 0.4 kg rolling on a horizontal surface with uniform velocity 2 m/sec. It has total K.E. as such:
- If earth has M.I. about its an axis about 9.83 10^ 37 kg ,m^2 . The angular momentum of earth about its own axis is :
- A light meter scale has two point masses 2 kg, each fixed at its ends. If the system is rotated about its centre with an angular...
- Two objects of masses 0.02 kg and 0.05 kg possess velocities 10 i m/sec and 3 i +5 j m/sec respectively. The velocity of their...
- M.I. of a uniform disc about a central axis is 1 kgm^2 . It is rotating with an angular velocity of 100 rad/sec. Another...
- Two uniform wires forms two circular loops. 'p' of radius r and 'Q' of radius such that moment of inertia of P about central axis...
- The sum of the moment of masses of all the particles of rigid body about the centre of mass is always :
- Which one of the following rotating about their axis of symmetry has both linear and rotational kinetic energies are same( equal)