A Very Thin Uniform Rod,2

question 18

Multiple Choice

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

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