mF0You are pressing a box against a sloped ceiling, perpendicular to the ceiling itself, as shown in the figure. The mass of the box is m=3.3 kg, the angle of the ceiling is 0=37°, and the coefficients of friction are μs-0.31 and μk=0.2.(a) What is the minimum force needed from you to keep the box at rest?N(b) Choosing up the sloping ceiling to be the positive direction, suppose you push with a force 4 N smaller than your answer to the previous part. What will be the acceleration of the box?m/s²

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