{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Physics 20 - axis its central mg about rigid body rotat isa...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: axis. its central mg about rigid body rotat' isa The flywheel ' n 0 Model wmax = 1200 rpm ZC = 0.75 m R = 250 kg (a) The radius of the flywheel M about the a . 1118 The moment of 250 kg. isM= S mass it R =0.75 m and 18 on is that of a disk tati 2 2 711 rad/s 0 ) 31kgm 2 =70 éaso kg)(0.75 my /I = (50 N m)/(70.31 kg m as follows rnet Ia=>a lMR2 2 alculated I d t is c 1119 on The angular accelerati 13—23 fa Rigid Body — 0 s) (t, [On 0 Rotat' = 0 rad/s + 0.711 rad/s2 4O irrad/s =5 tI = 177 s gives i 1200 rpm for angular veloc _ t0 ) = i 2 were (70.31 kg m2)(407trad/s)2 = 5.55 x105 J 100,2 1 2 energy del 407: rad ls. (0,”,me 88.85 rad/s = 70.31 kg m2 ”/2 =1.39X105 W = 139 kW 3 ). wmuemgy = a), (from part (21)) 2 (5.55 ><105 dun- At wmll energy — (”half energy 3 whalf energy time i terval = ,( 1 5 Km A_w At .85 rad/s):1300 N m —-88 2s 1' ___ (70.31 kg m2)(40 Irrad/s Mi... (b) The energy stored in the flywheel is rotational kinetic energy o 1 r. r v. \ .1 f ( M m 5 .N E O n a K = I m 5 M M. .s o + M __ M 3 .I. 0 M (J. 0 r. T 2m 1 V S a a w W m . w. __ .h = I . e 1 .m i .1 _ 2 .w w r m m. e .s m W = a e M. T M .m e e .n k g s m a u t e r a b .m e C 0 V C e We A B b m 3., at ,: usual helhflfl. «.8 . .1 \II n ,1 4/ «M85 . Y , :3 n S ) Mg M MM 1.. 33:. U k m w m a. 3 T n .1. in . a“. 0M afiymewwwm?“ t» mmbn Mimemaswm... My .35, 32%.... -fiwiwttmwfimhfiuwiwmwrwfei Wmeiwhifixmeanwwwwwixm» \mevhmtmlwf . . . M.) M .w aerMMMM. ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern