EASY
KCET (UG)
IMPORTANT
Earn 100

In figure and represent the total energy and speed of centre of mass of an object of mass in pure rolling. The object is:


(a)Sphere
(b)Ring
(c)Disc
(d)Hollow Cylinder

50% studentsanswered this correctly

Important Questions on Centre of Mass, Momentum and Collisions
EASY
KCET (UG)
IMPORTANT
Two particles which are initially at rest move towards each other under the action of their mutual attraction. If their speeds are and at any instant, then the speed of center of mass of the system is,

EASY
KCET (UG)
IMPORTANT
Two particles of masses and have equal kinetic energies. The ratio of their momentum is:

MEDIUM
KCET (UG)
IMPORTANT
A ball hits the floor and rebounds after an inelastic collision. In this case

EASY
KCET (UG)
IMPORTANT
During inelastic collision between two objects, which of the following quantity always remains conserved?

MEDIUM
KCET (UG)
IMPORTANT
A ball moving at collides with a ball moving in opposite direction at If the coefficient of restitution is , the their velocities after the collision are
