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Three like parallel forces P, Q, R act a...

Three like parallel forces P, Q, R act at the corners of the triangle ABC. Their resultant passes through
circumcentre of the triangle if ........

Text Solution

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The correct Answer is:
`P/(sin2A)=Q/(sin2B)=R/(sin2C)`
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Knowledge Check

  • Three like parallel forces P, Q and R are acting on the vertices of a Delta ABC whose resultant passed through its centroid, then :

    A
    `P/b=Q/a=R/c`
    B
    `P/tan A=Q/tan B=R/tan C`
    C
    P=Q=R
    D
    none of the above

  • Three like parallel forces P, Q and R are acting on the vertices of a Delta ABC whose resultant passed through its centroid, then :

    A
    `P/b=Q/a=R/c`
    B
    `P/tan A=Q/tan B=R/tan C`
    C
    P=Q=R
    D
    none of the above

  • Three charges each of value q are placed at the corners of an equilateral triangle. A fourth charge Q is placed at the centre of the triangle. If Q = -q :

    A
    the charges will move towards the centre
    B
    the charges will move away from the centre
    C
    the charges will remain stationary
    D
    the charges may move in any direction

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