Aflat uniform circular disk has a mass of 3.97 kg and a radius of 85.7 cm. it is suspended in a horizontal plane by a vertical wire attached to its center. if the disk is rotated 2.42 rad about the wire, a torque of 0.0688 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.

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?

The least penetrating form of radiation is

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?