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Find the moment of vecF about the point ...

Find the moment of `vecF` about the point `(2,-1,3)` when the force `vecF=3hati+2hatj-4hatk` is acting at the point `(1,-1,2)`.

Text Solution

Verified by Experts

The correct Answer is:
`2hati-7hatj-2hatk`
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Find the moment of vec F about point (2, -1, 3), where force vec F=3 hat i+2 hat j-4 hat k is acting on point (1, -1, 2).

Find the moment of the couple consisting of the force vecF=3hati+2hatj-hatk acting through the point hati-hatj+hatk and -vecF acting through the point 2hati-3hatj-hatk .

Knowledge Check

  • The torque of a force vecF=-3hati+hatj+5hatk acting at the point vecr=7hati+3hatj+hatk is

    A
    `14hati – 38hatj+16hatk`
    B
    `4hati+4hatj+6hatk`
    C
    `-21hati+4hatj+4hatk`
    D
    `-14hati+38hatj-16hatk`

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