First slide
Rotational motion
Question

Assume body B to be uniform:

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

(F is directed towards|
centre of mass)

(p)Clockwise
(b)
(q)Anticlockwise
(c)
(r)Zero
  (s)Conclusion cannot be drawn
with the information given

Moderate
Solution

(a) 

To balance torque due to f, N will shift downwards

(For rotational equilibrium τf=τN (about C)

(b) 

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

(c) 

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

Get Instant Solutions
When in doubt download our app. Now available Google Play Store- Doubts App
Download Now
Doubts App