Systems of Particles and Rotational Motion questions
1884 published questions with worked solutions.
- Two particles of equal mass m go around a circle of radius R under the action of their mutual gravitational attraction. The speed...
- A satellite of mass 'm' is revolving around the earth of mass 'M' in an orbit of radius 'r' with constant angular velocity 'ω'....
- Assuming that the earth is revolving around the sun in circular orbit of radius 'R', the angular momentum is directly...
- A body of mass 6 kg is acted upon by a force, so that its velocity changes from 3 m ,s^ -1 , then change in momentum is
- A body of mass 5 kg is moving with velocity of v = (2 i + 6 j ) m ,s^ -1 at t = 0 s. After time t = 2 s, velocity of body is (10...
- If a force of 250 N act on body, the momentum acquired is 125 kg-m/s. What is the period for which force act on the body?
- A bullet is fired from a gun. The force on the bullet is given by F = (600 - 2 10^5 , t), where F is in newton and t is second....
- A body of mass m collides elastically with velocity u with another identical body at rest. After collision, velocity of the...
- Two perfectly elastic particles A and B of equal masses travelling along the line joining them, with velocities 15 m ,s^ -1 and...
- The collision of two balls of equal mass takes place at the origin of coordinates. Before collision, the components of velocities...
- A smooth sphere of mass M moving with velocity u directly collides elastically with another sphere of mass m at rest. After...
- A particle of mass m moving in the x-direction with speed 2v is hit by another particle of mass 2m moving in the y-direction with...
- A mass m moves with a velocity v and collides inelastically with another identical mass. After collision, the 1st mass moves with...
- The centre of mass of a system of particles does not depend on
- Two bodies of masses 1 kg and 2 kg are lying in XY-plane at (-1, 2) and (2, 4) respectively. What are the coordinates of the...
- The torque of a force F = -6 i acting at a point r = -4 j about origin will be
- Moment of a force of magnitude 20 N acting along positive x-direction at point (3, 0, 0) about the point (0, 2, 0) (in N-m) is
- The torque of a force F = -3 i + j + 5 k acting at a point r = 7 i + 3 j + k about origin will be
- If torque is zero, then
- A block having mass m collides with an another stationary block having mass 2m. The lighter block comes to rest after collision....
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