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1.)For your inclined plane motion physics lab, you use a steel plate and a plastic block. Initially they put the block on the plate that is horizontal on a table, gradually tilting the plate until the block suddenly starts to slide when the plate forms a 38º angle with the table. What is the value of the static coefficient between steel and plastic?

2.) An inclined plane supports a pulley at its highest vertex, from this pulley 2 masses tied by a rope are held (like the structure of the class exercise), the mass m1 falls on the inclined plane and the mass m2 hangs vertically. If the angle of inclination of the plane is 35?, the masses are m1 = 1.5 kg and m2 = 3 kg, and the coefficient of friction between the plane and the mass m1 is μk = 0.4, what is the acceleration of the masses ?