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cheska_P

  • one year ago

Hi, do you know how to solve this : Three forces act on a point: 4N at 0 degrees, 5N at 90 degrees, and 8N at 45 degrees. What is the net force acting on that point?

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  1. zephyr141
    • one year ago
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    first thing you should always do is draw a Full Body Diagram of this system of forces.|dw:1444025549427:dw|

  2. zephyr141
    • one year ago
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    now add up all the forces in the y direction and all the forces in the x direction.

  3. zephyr141
    • one year ago
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    \[x:4+8\cos 45\]\[y:5+8\sin 45\] then use Pythagorean's Theorem to find the net force. \[f_{net}=\sqrt{x^2+y^2}\]

  4. BAdhi
    • one year ago
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    and the angle \(\theta = \tan^{-1} \left(\frac y x \right)\)

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