JEE MainPhysicsCenter of MassNumerical+4 / −1
A ball of mass 10 kg moving with a velocity m s 1 along X-axis, hits another ball of mass 20 kg which is at rest. After collision, the first ball comes to rest and the second one disintegrates into two equal pieces. One of the pieces starts moving along Y-axis at a speed of 10 m/s. The second piece starts moving at a speed of 20 m/s at an angle (degree) with respect to the X-axis. The configuration of pieces after collision is shown in the figure. The value of to the nearest integer is . 
Numerical answer
More from Center of Mass
- A large block of wood of mass M = 5.99 kg is hanging from two long massless cords. A bullet of mass m = 10 g is fired into the block and gets embedded in it. The (block + bullet) then swing upwards, their centre of mass rising a vertical… Includes diagram2021 · MCQ
- Two identical blocks A and B each of mass m resting on the smooth horizontal floor are connected by a light spring of natural length L and spring constant K. A third block C of mass m moving with a speed v along the line joining A and B… Includes diagram2021 · MCQ
- The disc of mass M with uniform surface mass density is shown in the figure. The centre of mass of the quarter disc (the shaded area) is at the position where x is … Includes diagram2021 · Numerical
- A ball of mass 10 kg moving with a velocity 10 m/s along the x-axis, hits another ball of mass 20 kg which is at rest. After the collision, first ball comes to rest while the second ball disintegrates into two equal pieces. One… Includes diagram2021 · Numerical
- An object of mass m1 collides with another object of mass m2, which is at rest. After the collision the objects move with equal speeds in opposite direction. The ratio of the masses m2 : m1 is :2021 · MCQ
- The projectile motion of a particle of mass 5 g is shown in the figure. The initial velocity of the particle is ms-1 and the air resistance is assumed to be negligible. The magnitude of the change in momentum between the points… Includes diagram2021 · Numerical
- A rod of mass M and length L is lying on a horizontal frictionless surface. A particle of mass 'm' travelling along the surface hits at one end of the rod with a velocity 'u' in a direction perpendicular to the rod. The collision is…2021 · Numerical
- If the Kinetic energy of a moving body becomes four times its initial Kinetic energy, then the percentage change in its momentum will be :2021 · MCQ