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The resultant of two forces, one double ...

The resultant of two forces, one double the other in magnitude is perpendicular to the smaller of the two forces. The angle between the two forces is

A

`150^(@)`

B

`90^(@)`

C

`60^(@)`

D

`120^(@)`

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • Two forces, with equal magnitude F, act on a body and the magnitude of the resultant force is F/3 . The angle between the two forces is:

    A
    `cos^(-1)(-17/18)`
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    A
    `cos^(-1)(-(17)/(18))`
    B
    `cos^(-1)(-(1)/(3))`
    C
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    D
    `cos^(-1)((8)/(9))`

  • If the resultant of two forces of magnitudes p and 2p is perpendicular to p , then the angle between the forces is

    A
    `(2pi)/3`
    B
    `(3pi)/4`
    C
    `(4pi)/5`
    D
    `(5pi)/6`

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