(a) A uniform rod of length ? and mass m rests on supports at its ends. The...

Question:

(a) A uniform rod of length ? and mass m rests on supports at its ends. The right support is quickly removed (see Fig). What is the force on the left support immediately thereafter?(b) A rod of length 2r and moment of inertia ?mr2 rests on top of two supports, each of which is a distance d away from the center. The right support is quickly removed (see Fig). What is the force on the left support immediately thereafter?