9Tftnc LC AU SPr fl ltr ID EtAsftc ry 7 r z i z t b t D E W f t N E e f c t E B t y p l fk rqartJl4r l rr lr o id o Li rr h e7 I i A a4t F o Y r I f o E A d o r o r c E Lk n c prz o peLn EJ 6t lot16g s wss arfunc 7rr Y fr slrz l r t tn atr ilwr th crT t e l 4 rcq e1rto f r o o1 ff t o t c rrelu a1 t k u r rq h vnry rLt Llq rtilf r f oto rLn ft L Lc o olul a t t A reirb e h r r l tl f 4 wifi p lr ft onrL flt n lulz t oh nt r t f n n P l t o h t t lo o l t J u 1 t ri err Y r x au r Slrc w hlus e A L S gLrn rl ccrr lhe r ffo a r x Ax t lna b5 o uf th cl4k 5 lp r r ko q 7 1k w oL 1 t b volrv q tktr ttrhn t rlrr tt ATA LV V AP AV v F V AtI A uniform beam of mass m6 and length supports blocks with fiurssos rzl and m2 at two positions The beam rests on two knife edges For what value of x will the beam be balanced at P such for m6 ttrit ttre normaf force at O is zero Use m b for m6 m l m 2 for m2 L for and d as appropriate in your equation L 3 Lel l f fwsw oL r rft L it fi pur t4h nf u fr t r t H r1 t l A l r u t l l X x o We W r l fi t r i x f N u t No o 1 t A L t X l V Find the nuss m ofthe countsrweight neoded to balance the I j00 kg ftuck on the incline Assume all pulleys are frictionless and masslcss r LAr 6 l t t s C r u 1 l t T r o It Tr rJr Fr tth f 6x rAs 1 2 T P t t g l t U 5 One end ofa uniform 4 m long rod ofweight Q is supportcd by a cable The other end rests against the wall where it is held by friction The coefficient of static friction between the wall and the rod is p 0 5 Determine the minimum di ance x from point I at which an additional weight f the sarn as the weight of thc rod can be hung without causing the rod to slip at pint A U z 3 s f r L 1 A N i r i h t Q V tr L t F o N T c o l b o F t T l q F o F l T r n 8 o J r c r V T s h f rosg F f l z l r r t D F t r t i o LT sth F z lt s qF fi t tfr co ts X v t r o E T s t t S L r p e ltr silht f sot 2 9 9 J L Assume Young s modulus for bone is 1 50 x 1010 N m2 The bone breaks if stress greater than 1 50 x 108 N7m2 is imposed on it a What is the maximum force that can be exerted on the femur bone in the leg if it has a mini mum effective diameter of 2 50 cm b If this much force is applied compressively by how much does the 25 0 cmJong bone shorten I t f ors F q r r z l r e N I sfurs Y t u ry r rct N o z r o u f J o r l o t N tr ry Jt ooln ur s rk tlrrcq lttct lh w br l t q A child slides across a floor in a pair of rubber soled shoes The friction force acting on each foot is 20 0 N The footprint area of each shoe sole is 14 0 cm2 and the thickness of each sole is 5 00 mm Find the horizontal distance by which the upper and lower surfaces of each sole are offset The shear modulus of the rubber is 3 00 MN zm2 Trwu ft 4b E l i n f S A AX 4 t J t t A
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