here is an object with mass of 70 kg, you are pulling it with a rope angled at 28 degrees up with respect to the horizontal floor.  the coefficient of static friction is 0.50  how hard should you pull to make the object move?

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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!