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Or6tior I A strair glrgc fu mourt d oi s tiirFwal€d cylidricel pr.s$rc vcsscloflhickr.ss 5 mm .td dirm.b 600 mm rs So*! in Figue l.Iflbc drrin gat3c hls t gaugaLttgth of 5 mm std clqgrtcs 0,0(Dmm wlrcoo bEorl plwrc P is applic4 drtrmirc: (a)
lhc intcmrl prrsnrc P, (10t totb)
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usingthc trffir's cirElc for -*!it! detEiE rhr sr.xiEun ittsplte $€.ring strsin rnd dlc lerins d |t| |oSlc I t lnticlclwilc to thcr-ark. (15 n&b)
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Ou6tior 2 A forcr P is appliedto the handleAB of. contol levef,BC asshownin Figurc2a.The lcv6 is pinncdat bothendsandhasa crosssectionasshownin Figu.e2b. It is madeof stcelwhich hasa yield stessin comprEssion of250 MPa-For a safetyftc'torof I .5, (a)
det€rminelhe maximumforceP thafcanbeappliedsothatthe leve.doesnot buckle, (l7
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arks)
dctcrminethe maximuD forc€ P that cs bc appliedif the length of levcr BC is shorl€ned to ,100mmAssumcE=200GPa18nar*s)
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Session 2003-2004,Semester [l
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