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.
A
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
A
1.5 m
O
u
0.2 m
30°
B
k = 300 N/m
