Physics

a body of 700g hangs from the end of a long wire fixed to a high tree. A horizontal string attached to the body pulls it until the wire is at 30° to the vertical. Find the tensions in both the string and the wire

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  1. You know two things: She sum of horizontal forces, and the sum of vertical forces is zero.
    Horizontal forces: Let Fh be the tension in the horizontal wire, and Fw be the tension in the long wire .
    Fh-Fw*sin30=0
    Vertical forces:
    .700*g -Fw*cos30=0
    second equation first: Fw=.700*9.8/cos30
    put that into the first equation and solve for Fh

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    bobpursley
  2. I need the workings

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