4) Consider two masses (m, and m2) are in motion on the frictionless inclined surfaces having angles 01 and 02 as shown in the figure. (frictionless pulley with negligible mass) a) Draw the free body diagram for each mass. b) Write down the equations of motion for each mass c) Calculate the acceleration of masses in term of mi , mz , 01 , 02 and g. (in motion ) my 5) A 50 kg box rests on a rough horizontal surface. The coefficient of static friction between the horizontal surface and the box is us = 0.75. The box is pulled by means of light rope with a force of magnitude F, making an angle 0 with the horizontal. a) Draw the free body diagram b) Find the magnitude of the force F that will just start the box moving horizontally as a function of 0. my 50 kg