A block of mass m is revolving in a smooth horizontal plane with a constant speed v. If the radius of the circular path is R, find the total contact force received by the block
A
B
mg
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
FBD: Let 
and 
be the normal reactions offered by the vertical and horizontal surfaces respectively. 
pushes the block towards the centre of circle and 
equilibrate the block in vertical by nullifying the weight mg. Force equation
.......(i)
Hence, the net reaction (contact) force is 
Substituting 
and 
, we have
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