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The figure below shows a uniform rod of length L=0.9 m and mass M (not required in answer) which is free to rotate about one end, and which is initially at rest at an angle θ=40º with respect to the horizontal. Find the (linear) speed of the center of mass of the rod when it reaches the vertical position (θ=-90°).

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Answer #2

2. I ML? 1/2 hi TAGO — sin 40 he hi ha 0.0 sindo 0, S8, from Conservation everly mg Chithe) = 11 w2 Mg(050*0-13) = M2. W 9.8

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Answer #1

Pege L=o.am sho & مية مدوية Gravitational potential Energy gain in kincho eney mgh IIw2. ghgle af sino) g 2. 2 3 9.8 109 109

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