The forces F1, F2, F3, . . ., Fn acting on an object are in equilibrium if the resultant force is the zero vector:F1 + F2 + F3 + . . . + Fn = 0.The given forces are acting on an object.a. Find the resultant force.b. What additional force is required for the given forces to be in equilibrium?F1 = 3i - 5j, F2 = 6i + 2j

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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!