Which of the following conditions must be satisfied for the relation to describe a…
PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
Which of the following conditions must be satisfied for the relation v=rω to describe a rigid object that is moving across a horizontal surface?
(a) A non-zero coefficient of kinetic friction is acting between the object and the surface.
(b) The point of contact between the object and the surface is instantaneously at rest relative to the surface.
(c) The object’s center of mass moves with constant velocity.
(d) The net external torque on the object about its center of mass is zero.