Question: The 1 5 - lb rectangular plate has a natural period of vibration t = 0 . 5 s , as it oscillates around the

The 15-lb rectangular plate has a natural period of vibration t=0.5s, as it oscillates around the axis of rod AB. Neglect the mass of the rod. Suppose that a=2ft,b=4ft.
Determine the torsional stiffness k of the rod, measured in lbft/rad. Express your answer in pound-feet per radian to three significant figures
The 1 5 - lb rectangular plate has a natural

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