First slide
Rotational motion

Assume body B to be uniform:

Column-AColumn-B (Torque of
normal reaction on body B
about centre of mass)

(F is directed towards|
centre of mass)

  (s)Conclusion cannot be drawn
with the information given



To balance torque due to f, N will shift downwards

(For rotational equilibrium τf=τN (about C)


Normal will shift towards left.
(For rotational equilibrium τf=τN


Frictionless surface. So, no torque about C.M. So
normal will not shift and will pass through C.M.

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