ME211_sol10 - 14-5 TWo hemispheres having an inne r radius...

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14-5. TWo hemispheres having an inner radius of 2 ft and wall thickness of 0.25 in. are fitted together, and the inside gauge pressure is reduced to —10 psi. If the coefficient of static friction is p. = 0.5 between the hemispheres, determine (a) the torque Tneeded to initiate the rotation of the top hemisphere relative to the bottom one, (b) the ven1c1 force needed to pull the top hemisphere off the bottom one, and (c) the horizontal force needed to slide th top hemisphere off the bottom one. It 25 in 7 f.’: 2.13 rc.(2t DI21/ 2 .) :(gfqo t 4 1fS.2 ff 1) fle vertlet 1rr8 2L4 Gr( z frtsl .p(f t, hei 1 lteiec rtt, jL4 r1i( P Lq1 f’v’rtke re bwn.-( frrc’ c) 7k jT( fr: c’4ce tl€ t lei.q 72 Lee s( ile 1iw( 1rtc is epi( -frctLA fi -f 2to7l t ufr’p sJ- t0r14a) U r zZj.tr2. J:flo ita Frt 1 . Forte: f;,vzo.s(n601L) :Z& a) 71€ r’” Uro7 1 aa t )t tt’M. of t1e. iWo Lek45 7 ,jIe,eJ ‘ete to o 4 o1t er, iL 8 k.Us oVQftk€ ‘oke it€ frcC7’?oL.i -(W(e aL L’ cet1 r cf /i
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14.7.
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