A string of negligible mass going over a clamped pulley of mass m supports a block of mass M as shown in the figure. The force on the pulley by the clamp is given by
`sqrt(2) Mg`
`sqrt(2) mg`
`[sqrt((M+m)^2 + m^2)]g`
`[sqrt((M+m)^2 + M^2)]g`
the answer given is wrong.