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A small block of mass 1kg is at rest on ...

A small block of mass `1kg` is at rest on a parabolic surface given by `y = x^(2)`. The coefficient of friction between the block and the surface is enough to prevent slipping.If position of block on surface is( 2m, 4m) then the normal force then the surface exerts at this position is

A

`g/2 N`

B

`g/ sqrt(5) N`

C

N

D

`g/ sqrt(17) N`

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