When forces `F_(1)` , `F_(2)` , `F_(3)` are acting on a particle of mass m such that `F_(2)` and `F_(3)` are mutually prependicular, then the particle remains stationary. If the force `F_(1)` is now rejmoved then the acceleration of the particle is

Explanation

If mass 'm' is stationary under three forces
`vecF_(1)+vecF_(2)+vecF_(3)=0`
`vecF_(1) =-(vecF_(2)+vecF_(3))`
`sqrt(F_(2)^(2)+F_(3)^(2)) =F_(1)`
Obviously if `F_(1)` is removed then the mass will have
acceleration `a=sqrt(F_(2)^(2)+F_(3)^(2))/(m)(or)a = (F_(1))/(m)` .