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Three forces act on a particle and keep ...

Three forces act on a particle and keep ai at rest. It is possible to have

A

all the forces acting eastwards

B

two forces acting eastwards and one acting northwards

C

one force acting eastwards, one westwards and one southwards

D

One force acting eastwards and two forces westwards

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • Three forces are acting on a particle as shown in the figure. To have the resultant force only along the Y-direction, the magnitude of the maximum additional force needed is

    A
    `0.866 N`
    B
    `1.732 N`
    C
    `0.5 N`
    D
    `4 N`

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

    A
    the force must be coplanar.
    B
    the force cannot be coplanar
    C
    the forces may or may not be coplanar.
    D
    if three of these forces are coplanar, so must be the fourth.

  • Let vecF be a force acting on a particle having positon vector vecr. Let vecr be the torque of this force about the origin then

    A
    `vecr.vecGamma=0 and vecF.vecGamma=0`
    B
    `vecr.vecGamma=0 but vecF.vecGamma!=0`
    C
    `vecr.vecGamma !=0but vecF.vecGamma=0`
    D
    `vecr.vecGamma!=0 and vecF.vecGamma!=0`

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