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A uniform, solid metal disk of mass 6.90 and diameter 26.0 hangs in a horizontal plane, supported at its center by a vertical metal wire. You find that it requires a horizontal force of 4.15tangent to the rim of the disk to turn it by 3.32, thus twisting the wire. You now remove this force and release the disk from rest.
A. What is the torsion constant for the metal wire?
B. What is the frequency of the torsional oscillations of the disk?
C. What is the period of the torsional oscillations of the disk?
What is an electric field between the plates? Towards which plate is it directed.
If the coefficient of static friction is 0.500, what minimum force magnitude is required from the rope to start the crate moving
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A 49.2-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.637 and 0.439, respectively. What horizontal pushing force is required
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