Physics questions
20027 published questions with worked solutions.
- A bob of simple pendulum has mass 'm' and is oscillating with amplitude 'A'. If the length of pendulum is 'L', then the maximum...
- Moment of inertia of a solid sphere about its diameter is 'I'. It is then casted into 27 small spheres of same diameter. The...
- The mass 'm' is rotating in vertical circle of radius 'R'. The difference in its kinetic energy at the top and the bottom of the...
- Two circular loops A and B are made of the same wire and their radii are in the ratio 1:n. Their moments of inertia about the...
- A particle with position vector r has a linear momentum P. Which one of the following statements is true in respect of its...
- A child is standing with folded hands at the centre of the platform rotating about its central axis. The kinetic energy of the...
- Two rings of radius 'R' and 'nR' made of same material have the ratio of moment of inertia about an axis passing through its...
- A molecule consists of two atoms each of mass 'm' and separated by a distance 'd'. At room temperature, if the average rotational...
- A solid sphere of mass M, radius R has moment of inertia 'I' about its diameter. It is recast into a disc of thickness 't' whose...
- Two bodies rotate with kinetic energies 'E₁' and 'E₂'. Moments of inertia about their axis of rotation are 'I₁' and 'I₂'. If I_1=...
- A disc of radius 0.4 m and mass one kg rotates about an axis passing through its centre and perpendicular to its plane. The...
- A particle at rest starts moving with a constant angular acceleration of 4 rad/s² in a circular path. At what time 't' the...
- A disc of radius 0.4 metre and mass 1 kg rotates about an axis passing through its centre and perpendicular to its plane. The...
- The ratio of radii of gyration of a circular ring and circular disc of the same mass and radius, about an axis passing through...
- Moment of inertia of two rotating bodies are I_1 and I_2 respectively (I_1>I_2). Let K_1 and K_2 be their kinetic energies. If...
- A particle of mass 'm' is moving with velocity 'V' on a concave shaped road of radius 'r'. The thrust at the lowest point is (g =...
- Two circular loops 'A' and 'B' of radii 'R' and 'NR' respectively are made from a uniform wire. Moment of inertia of 'B' about...
- A circular disc X of radius 'R' is made from a metal plate of density 'q' and thickness 't'. Another disc Y of radius '4R' of...
- A flywheel rotating at 420 r. p. m. slows down at constant rate of 2 rad s⁻². The time required to stop the flywheel is [ Take =...
- 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...