Question

. A system of particles is called a rigid body, when
(a) any two particles of system may have
displacements in opposite directions under
action of a force
(b) any two particles of system may have
velocities on opposite directions under
action of a force
(c) any two particles of system may have a zero
relative velocity
(d) any two particles of system may have
displacements in same direction under
action of a force

Answer 1

Answer:

option c is correct... because... while defining rigid body we say that ... the relative distance between two particles is zero ... hence relative velocity also zero

Answer 2

A system of particles is called a rigid body when c) any two particles of the system may have a zero relative velocity.

Explanation:

• A rigid body is described as a body that has particles that are at a constant distance from one another.
• It's also defined as a collection of particles with the property of remaining unaltered during body motions.
• When the system of coordinates is completely determined, the position of the body with regard to the fixed system is specified.
• When a rigid body has a linear velocity equal to the time rate of change of its linear position, it is a vector quantity.