An object of mass 45 kg is drawn upward an inclined plane by a force of 600N. The coefficient of friction between the object and the plane is 0.56. angle of inclination of the plane is 30o to the horizontal a). what is the acceleration of the object? b). if at the top of the plane, the object slide down freely on the plane under its own weight, with i. what acceleration and ii. velocity does it strike the ground? c) what would be the acceleration if the plane was frictionless

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A: Free body diagram: