7-20. A circular hoop is suspended in a horizontal plane by three strings, each of length l, which are attached symmetrically to the hoop and are connected to fixed points lying in a plane above the hoop. At equilibrium, each string is vertical. Show that the frequency of small rotational oscillations about the vertical through the center of the hoop is the same as that for a simple pendulum of length 1.

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Theoretical Mechanics Topic: Lagrangian and Hamiltonian Dynamics >Generate the necessary equations to this system. > Use the equations of motion >Generate equations for (x,y), (Vx,Vy), V², T > L = T-U --- For study purposes. Thank you!
7-20. A circular hoop is suspended in a horizontal plane by three strings, each of length
l, which are attached symmetrically to the hoop and are connected to fixed points
lying in a plane above the hoop. At equilibrium, each string is vertical. Show that
the frequency of small rotational oscillations about the vertical through the center
of the hoop is the same as that for a simple pendulum of length 1.
Transcribed Image Text:7-20. A circular hoop is suspended in a horizontal plane by three strings, each of length l, which are attached symmetrically to the hoop and are connected to fixed points lying in a plane above the hoop. At equilibrium, each string is vertical. Show that the frequency of small rotational oscillations about the vertical through the center of the hoop is the same as that for a simple pendulum of length 1.
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