A ball of mass m is fastened at the end of a flagpole connected to the side of a tall building at point P. The length of the flagpole is l and [tex]\theta[/tex] is the angle the flagpole makes with the horizontal. The ball becomes loose and starts to fall. What is the angular momentum of the ball about point P? so angular momentum is L=mrvsin(theta) in this problem, the angle between force downwards and the radius is not given, but the angle beween the building and the radius is given. Therefore, sine cannot be used. Cosine must be used for this specific problem. v=at v=-gt [tex]L=-mlgtCos\theta[/tex] is this the correct way to approach this question?