Block A has no relative motion with resprct to wedge fixed to the lift as shown in figure during motion-1 or motion-2 Then,

Block A has no relative motion with respect to wedge fixed to the lift as shown in figure during motion-1 or motion-2 Then,

Relative Motion in 1D

Relative motion in 2 dimensions

Motion is relative.

Relative motion|| Examples on relative motion

Relative Motion In 1 - D|Questions

Relative Motion In 2 - D|Questions

block and string constrained motion-1

In fig, no relative motion takes place between the wedge and the block placed on it. The rod slides down wards over the wedge and pushes the wedge to move in horizontal direction, The mass of wedge is same as that of the block and is equal to M. If tan theta=(1//sqrt(3)) , find the mass of rod. (Neglect rotation of the rod).