1.

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

Answer»

`-(barF_3)/m("or")(barF_1+barF_2)/m`
`-(barF_1)/m("or")(barF_3+barF_2)/m`
`-(barF_1)/m("or")(barF_2-barF_3)/m`
`-(barF_2)/m("or")(barF_2+barF_3)/m`

ANSWER :A


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