Question

11.
A uniform rigid rod of length ( and mass m is hinged at O in such a way that it
can rotate invertical plane. Initially it is kept vertically as shown infigure. When it
is released, it rotates about O in verticle plane (consider all surfaces are frictionless).
A) The magnitude of force given by the hinge to rod at instant when rod becomes
137
horizontal is mg
4
(B) The centre of mass of rod undergoes uniform circular motion
ser The direction of hinge force is along ty-axis at instant when centre of mass of rod is at lowest positon
(D) The mechanical energy of rod is not conserved during the motion​

Answer 1

Answer:

(consider all surfaces are frictionless). (A) The magnitude of force given by the hinge to rod at instant when rod becomes horizontal is vormg (B) The centre of mass of rod undergoes uniform circular motion (C) The direction of hinge force is along +y-axis at instant when centre of mass of rod is at lowest position.