load devil like the one shown in Figure is used to move a 120 kg load with an acceleration of 1.2 m/s2. The angle with which the little devil is carried is 60 degrees from the horizontal. Assuming there is no friction, what force must be apply on the little devil? Free Body Diagram of Exercise Balance of forces in both axes Operations Results

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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!