In the ballistic pendulum experiment (A. K.A conservation of momentum & energy), the velocity of the projectile was measured and recorded (vo = 3.94 m/s). The mass of the projectile was 12.1 g and the ballistic pendulum mass was 103.3 g. After the projectile is fired, it hits the ballistic pendulum, and both moved with velocity LaTeX: vv. If the pendulum length is 0.32 m, calculate the maximum angle that the ballistic pendulum (with projectile) reached after the collision.