A very thin uniform rod, 2.40 m long and of weight 135 N, has a frictionless hinge at its lower end. It starts out vertically from rest and falls, pivoting about the hinge
Just as it has rotated through an angle of 55.0°, what is the downward acceleration of the end farthest from the hinge?
A) 5.02 m/s2
B) 8.03 m/s2
C) 9.80 m/s2
D) 12.0 m/s2
E) 19.6 m/s2
Answer: D
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