i need help setting it up to find the answers. (answers included)

Question

two masses are connected together by a string which is then hung over a pulley. m1= 7.50 kg and m2= 6.50 kg. before they are released m1 is suspended h= 135cm above the floor while m2 is sitting on the floor.
a.what will be the resulting acceleration of this system (.71 m/s^2)
b. what will be the tension in the string as m1 accelerates to the floor? (69.7 N)
c. how long will it take for m1 to reach the floor? (1.95s)
d. what will be the velocity of m1 just as it reaches the floor? (1.38 m/s)

Answer 1

whats the angle?