A force of constant magnitude pushes a box up a vertical surface as shown in the figure. The box moves at a constant speed. If the mass of the box is 6.20 kg, it is pushed 2.90 m vertically upward, the coefficient of friction is 0.350 and the angle ở is 30.0°, determine the following. (a) work done on the box by F (b) work done on the box by the force of gravity (c) work done on the box by the normal force (d) increase in gravitational potential energy of the box as it moves up the wall

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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!