Question

Exercise 10.11 - Enhanced - with Solution 2014 Conate Part A A machine part has the shape of sold uniform sphere of mass 220 g and diameter 3. em. tis spinning about a frictionless axle through scorter, but at one point on its equatoris scraping against metal, resulting in a friction force of 0.0200 N that point You may want to review (Pages 300.300) For related problem solving tips and strategies, you may want to view a Video Tutor Botion of Anuranding cable, Find its angular acceleration at the direction the sphere is spinning to the positive sense of rotation ΑΣ ? Suomi A Best * Incorrect; Try Again; 4 attempts remaining Check your signs Part How long wilske to decreases rotational speed by 200 rad/ VALO ? Submit

Answer 1

(a) Telque Extented by friction folce 2 [ r=P/2 てこと 0.037 C = (0,0200N) (0.018) -7 0.0185m] e-3-7x10" Nim Marant I entoris & allig Sphen - MO? e/st0-220 Kg) (0.0185) 3= 3:01 x 105 kg. m² Z=12 & I 2-3.78157 3.01x10s K= - 12.29 sadls²

(b) the time taken for the rotational spect of the sphere До At= - 28 redis Atz 2.275 - 12.29 rad /s²