The helicopter view in the figure below shows two people pulling on a stubborn mule. (Take F₁ F₂ 75.0° F₁ 60.0⁰ (a) Find the single force that is equivalent to the two forces shown. magnitude N direction counterclockwise from the +x-axis. 138 N and F₂= 62.0 N.) (b) Find the force a third person would have to exert on the mule to make the net force equal to zero. magnitude N direction counterclockwise from the +x-axis

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!