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Dynamics of Rotational Motion and hinge
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[QUOTE="denny2, post: 5484056, member: 595257"] One end of a thin, uniform rod is connected to a frictionless hinge as shown in Figure 1. The rod has a length of 0.8 mand a mass of 2 kg. It is held up in the horizontal position (θ=90∘) and then released. 1)Calculate the angular velocity of the rod at θ=90∘. 2)Calculate the angular acceleration of the rod at θ=90∘. 3)Calculate the angular velocity of the rod at θ=60∘ 4)Calculate the angular acceleration of the rod at θ=60∘ 5)Calculate the angular velocity of the rod at θ=0∘. 6)Calculate the angular acceleration of the rod at θ=0∘. [ATTACH=full]188096[/ATTACH] [h2]Homework Equations[/h2] mgh=1/2 Iw^2 a = ((mgcos)1/2)/I [h2]The Attempt at a Solution[/h2] I got these answers and only 1 and 6 were correct 1)0 rad/s 2)74 rad/s^2 3)8.6 rad/s 4)64 rad/s^2 5)12 rad/s 6)0 rad/s^2 Any help is appreciated thank you :) [B][/B] [/QUOTE]
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Dynamics of Rotational Motion and hinge
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