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Three concurrent co-planer force 1N , 2N...

Three concurrent co-planer force `1N` , `2N` and `3N` acting along different directions on a body

A

can keep the body in equilibrium if 2 `N` and 3 `N` act at right angle.

B

can keep the body in equilibrium if 1 `N` and 2 `N` act

C

connot keep the body in equilibrium.

D

can keep the body in equilibrium if 1 `N` and 3 `N` act at an acute angle.

Text Solution

Verified by Experts

The correct Answer is:
C
If `1N` and `2N` act in the same direction, then equilibrium is possible.
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Knowledge Check

  • The directions of three forces 1N, 2N and 3N acting at a point are parallel to the sides of equilateral triangles taken in order. The magnitude of their resultant is

    A
    0
    B
    `(sqrt""3)/(2)N`
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    `sqrt(3)/(2)N`
    C
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    D
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  • Moment of a force of magnitude 20 N acting along positive x-direction at point (3m,0,0) about the point (0,2,0) (in N-m) is

    A
    20
    B
    60
    C
    40
    D
    30

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