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F18–8. The 50@kg reel has a radius of gyration about its center O of kO = 300 mm. If it is released from rest, determine its angular velocity when its center O has traveled 6 m down the smooth inclined plane.


Prob. F18–10

F18–11. The 30@kg rod is released from rest when u = 45°. Determine the angular velocity of the rod when u = 0°. The spring is unstretched when u = 45°.
0.4 m

1.5 m

0.2 m


k = 300 N/m

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