Solve the next two problems.

Problem # 3 {20 points}: If the only forces acting on a 2.0-kg mass are F1 = (3; Si) N and f2 = (5; + 33) N, what is the magnitude of the acceleration of the particle? Problem # 4 [20 points}: If a mass m is located at point P, what will be the gravitational force exerted on it by the two masses M? Express your result in terms at the variables a, r, M and m. Hint: Use a problem symmetry. T 1\" r! I)