Aflat uniform circular disk has a mass of 3.00 kg and a radius of 70.0 cm. it is suspended in a horizontal plane by a vertical wire attached to its center. if the disk is rotated 2.50 rad about the wire, a torque of magnitude 0.0600 n m is required to maintain that orientation.
calculate (a) the rotational inertia of the disk about the wire
(b) the torsion constant, and
(c) the angular frequency of this torsion pendulum when it is set oscillating.
Answers: 3
Physics, 22.06.2019 06:00
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Now that we have a feel for the state of the circuit in its steady state, let us obtain the expression for the current in the circuit as a function of time. note that we can use the loop rule (going around counterclockwise): e−vr−vl=0. note as well that vr=ir and vl=ldidt. using these equations, we can get, after some rearranging of the variables and making the subsitution x=er−i, dxx=−rldt. integrating both sides of this equation yields x=x0e−rt/l. use this last expression to obtain an expression for i(t). remember that x=er−i and that i0=i(0)=0. express your answer in terms of e, r, and l. you may or may not need all these variables. use the notation exp(x) for ex.
Answers: 1
Aflat uniform circular disk has a mass of 3.00 kg and a radius of 70.0 cm. it is suspended in a hori...
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