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Four forces acting on a particle keep it...

Four forces acting on a particle keep it in equilibrium, then :-

A

(a)the force must be coplanar.

B

(b)the force cannot be coplanar

C

(c)the forces may or may not be coplanar.

D

(d)if three of these forces are coplanar, so must be the fourth.

Text Solution

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The correct Answer is:
C, D
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Knowledge Check

  • If the external force acting on a system of particle is zero then …………..

    A
    `vec(a)_(cm)=0`
    B
    `vec(v)_(cm)=0`
    C
    `vec(r )_(cm)=0`
    D
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  • If vecF is the force acting on a particle having position vector vecr and vectau be the torque of this force about the region, then :

    A
    `vecr.vectaugt0 and vecF.vectault0`
    B
    `vecr.vectau=0 and vecF.vectau=0`
    C
    `vecr.vectau=0 and vecF.vectaune0`
    D
    `vecr.vectaune0 and vecF.vectau=0`

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