Q- A thin rod is held vertically with its lower end resting on a frictionless horizontal surface. The rod is then released to fall freely.
(a) Determine the speed of its center of mass just before it hits the horizontal surface. Use h, M, and g for length, mass, and gravitational acceleration respectively.
(b) Now suppose the rod has a fixed pivot at its lower end, determine the speed of the rod's center of mass just before it hits the surface.
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