A Thin Uniform Rod (Length = 125 Cm,mass = 250

question 65

Multiple Choice

A thin uniform rod (length = 125 cm,mass = 250 g) is pivoted about a horizontal frictionless pin through one end of the rod.The moment of inertia of the rod through this axis is (1/3) mL².The rod is released when it is 20^o below the horizontal.What is the angular acceleration of the rod at the instant it is released?

• A)7.36 rad/s²
• B)14.7 rad/s²
• C)11.1 rad/s²
• D)22.1 rad/s²
• E)16.7 rad/s²

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