Two horizontal forces, are acting on a box, but only is shown in the drawing. ca

Question

Two horizontal forces, are acting on a box, but only 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 = + 3.2 N and the mass of the box is 3.7 kg. Find the magnitude and direction of when the acceleration of the box is the following. Find the magnitude and direction of when the acceleration of the box is +5.7 m/s2. (Indicate the direction of the force by the sign of your answers.) Find the magnitude and direction of when the acceleration of the box is -5.7 m/s2. (Indicate the direction of the force by the sign of your answers.) Find the magnitude and direction of when the acceleration of the box is 0 m/s2. (Indicate the direction of the force by the sign of your answers.)

Explanation / Answer

a) let the force F2 is F2

F2 + F1 = m * a

F2 + 3.2 = 3.7 * 5.7

F2 = 17.9 N

b)

F2 + F1 = m * a

F2 + 3.2 = -3.7 * 5.7

F2 = -24.3 N

c)

F2 + F1 = m * a

F2 + 3.2 = 0

F2 = -3.2 N

the force F2 is - 3.2 N

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