Two additional cylinders, identical to the one shown, can each be hung on the bar by hooks from any of the open holes so that the bar will still be in rotational equilibrium when all three cylinders are hanging from it. From which two holes should the two cylinders be hung? Briefly explain your reasoning.

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Chapter1: Units, Trigonometry. And Vectors
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Two additional cylinders, identical to the one shown, can each be hung on the bar by hooks from any of the open holes so that the bar will still be in rotational equilibrium when all three cylinders are hanging from it. From which two holes should the two cylinders be hung? Briefly explain your reasoning.
A B C
E F
A uniform bar, of mass M, with seven evenly spaced holes is held by
sliding the bar over a horizontal peg through one of the seven holes. The
peg passes through hole C, and a cylinder hangs from a hook placed
through hole B as shown above. The mass of the bar is equal to the mass
of the cylinder, and the location of the center of mass of the bar is at the
center of hole D. In this configuration, the bar-cylinder system remains
motionless but is free to rotate around the peg in hole C. Frictional
forces acting on the bar are negligible.
Transcribed Image Text:A B C E F A uniform bar, of mass M, with seven evenly spaced holes is held by sliding the bar over a horizontal peg through one of the seven holes. The peg passes through hole C, and a cylinder hangs from a hook placed through hole B as shown above. The mass of the bar is equal to the mass of the cylinder, and the location of the center of mass of the bar is at the center of hole D. In this configuration, the bar-cylinder system remains motionless but is free to rotate around the peg in hole C. Frictional forces acting on the bar are negligible.
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