Two horizontal forces, and , are acting on a box, but only
Chapter 4, Problem 4.99(choose chapter or problem)
Two horizontal forces, and , are acting on a box, but only F B F 1 is shown in the drawing. can point either to the right or to the left. The box moves only along the x axis. There is no friction between the box and the surface. Suppose that and the mass of the box is 3.0 kg. Find the magnitude and direction of when the acceleration of the box is (a) 5.0 m/s2 , (b) 5.0 m/s2 , and (c) 0 m/s2 .
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