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    DDenise's Avatar
    DDenise Posts: 2, Reputation: 1
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    #1

    Sep 8, 2009, 03:27 PM
    Single equivalent force
    Two people are pulling on a mull (opposite directions). Force 1 is 120 Newtons at 60 degrees. Force 2 is 80 Newtons at 75 degrees. How do I find the single force equivalent to the two forces indicated? If a third person was pulling on the mule, what force would have to be exerted on the mule to make the resultant force equal to zero?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 9, 2009, 08:33 AM

    1. You have to draw a sketch.
    2. Break the forces into their corresponding components.

    A force of 4N at 45 degrees to the horizontal is broken into a vertical force of N and a horizontal right force of N. If you combine those two forces by pythagoras theorem, you'll have the 4 N back.

    Now, if you want the resultant to be zero, you have to cancel all the resultant components, that is providing the equal and opposite force.

    I hope that it helped. Post your answer to see if you understood well, or perhaps you didn't understand something, OK? :)
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