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Category > Physics Posted 08 May 2017 My Price 6.00

z axis

‘ Firefnx Fils Edit View History Bookmarks Tools Window Help _ :- fi 15 m {9 3B 2'?- 1 SEKI- Fri11:23 AM Q‘iE “'5 "was: Rotational Dynlml... x .0 I)‘ G) Iww.webasslgn.nerlwebeludent/Assignmenr-Responses}subml17dep=16034394 Three objects lie in the x, y plane. Each rotates about the z axis with an angular speed of 5.94 radls. The mass m of each object and Its perpendicular distance r from the z axis are as Follows:
(1)11), - 6.60 kg and r1 - 2.16 m, (2)1172 - 3.76 kg and r2 - 13.8!) rnr (3) n13 - 2.97 kg and r3 - 2.70 m. (a) Find the tan ential speed of each object. V‘ra' (b) Determine the total kinetic energy ofthis system using the expression KE — Vamlvll + hmzvzz + Var-naval.
J (c) Obtain the moment of Inertia of the system.
kg - m2 (:1) Find the rotational kinetic energy of the system using the relation KER a W032 to verify that the answer is the same as the answer to (b).
.1 Submit Answer Save Progress A flywheel Is a solid disk that rotates about an axis that Is perpendicular to the disk at Its center. Rotating flywheeis provide a means for storing energy in the form of rotational kinetic energy and are being considered as a possible alternative to batteries in electric cars. The gasoline burned In a 4DO-rnlle trip In a typical rnldsize car produces about 1.20 x 109 J of energy. How Fast
would a 16-kg flywheel with a radius of 0.40 m have to rotate to store this much energy? Give your answer in rev/min.
413495.57 J rev/min

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SuperTutor
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Status NEW Posted 08 May 2017 03:05 AM My Price 6.00

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