Two forces, F1=20N, 15° W of N, and F2=30N, 43° S of W, were used to pull a 60 kg steel cart. What is the equilibrant force needed to avoid the steel cart from moving? Answer should be in vector notation

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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!