Practice Problem 8.10 - Angular Momentum(RMEJO I A grinding...

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Unformatted text preview: Angular Momentum (RMEJO) I. A grinding wheei removes material from a work piece by applying an abrasive surface moving at a fast speed. What is the angular momentum of a 2 kg uniform cylindrical grinding wheel rotating at 1800 rpm, if it has a radius of 50 cm? 31. - . I: «ll-x 2&3 x Q35) “11" = ($25 kg-wmz. - 2K I (10:: 1.800 alarm 0:. lgOflX "'6? flflAiIS :2 807? WIS . W51; "mm '- « Ls 1w ; blZSxéflw mama-5 2. A 5kg ball is spinning in the sand at 6 rad/s when a lizard jumps onto the edge of the bail. If the ball spins at 3 rad/s after the lizard jumps on it, what is the mass of the lizard? Take I---(?./5}mR2 for the rotational inertia of the bail, even though this is only strictly correct for a uniformly dense bail. MB :: ”:3 k%- 52‘; mm); 5% tin.- w i ... l . 03; - g :‘U‘J‘rs ML- .' mm 3"; “i531“, liflmfisd . m5 : EMIs‘t. @ncm rU/trz, am‘gahim A GWWK mwtffim n a! ‘? x. / =37 éxglxé :{%x§+MV)3 '9 4 ”"1 2+ML. 5? Eazkfl é:— Mix» a] six—‘5“ bail. ...
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