Acceleration and Tension

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A block of mass M1 = 3.70kg on a frictionless inclined plane making an angleθ1 = 28degrees with the horizontal is connected by a cord over africtionless mass less pulley to a second block of massM2 = 4.86 kg on africtionless plane at an angle θ2= 42 degrees. What direction does M1 movealong the plane? What is the acceleration of each block? What isthe tension of the cord?
(a) Show that the accleration of each block is:
                                        a=    (M1Sinθ1 - M2Sinθ2) g
                                                   M1+ M2        
(b) Show that the tension of the cord is
                                              T= (M1M2) g(sinθ1 + sinθ2)

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