Physics

How much work is done by the force F⃗ =(− 3.0 i^− 7.6 j^)N on a particle that moves through displacement Δr⃗ = 3.6 i^−2.0j^m?

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  3. 👁 902
asked by Trevor
  1. Fx dx + Fy dy

    (-3 * 3.6) - (7.6 * -2)

    4.4

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    2. 👎 0
    posted by Damon
  2. F=<-3,-7.6>
    Δr = <3.6,-2>

    Work done
    F.Δr
    = <-3,-7.6><3.6,-2>
    = 4.4 J

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    2. 👎 0
    posted by MathMate

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