Solve the given question:
Question: Hand pushing book against vertical wall. The mass of the book is 1.2 kg. The coefficient of friction between the book and the hand is 0.40. The coefficient of friction between the book and the wall is 0.80. The force exerted by the hand on the book is perpendicular to the book and horizontal. The book s sliding down with a constant acceleration of 0.1 m/s2,
Part A: What is the magnitude of the pressing force F that the hand must exert?
I need help to find the magnitude of the pressing force F that the hand must exert.