a.  tension in equilibrium is 

          T  =  210 N

b.  when the remaining angle is theta = 20 degrees, the angular 
    acceleration of the pole will be

     
        ang. accel =  0.85 rad/sec^2


c.  the motion is not SHM from start to finish because
    the angle theta is not always small -- it starts at 90 degrees,
    not 10 degrees or so


d.  just before the pole hits the wall, golden ball moves at 

        speed  =  11.2 m/s