Question: ( 1 ) Two copper bars & one aluminium bar are held by pins at theirends The bars are separated by providing thin spaces between

(1) Two copper bars & one aluminium bar are held by pins at theirends The bars are separated by providing thin spaces between them Each copper has 50(mm)12.5(mm)?barmsm whil m aluminiken bat 1550(mm)25(mm) It temperature of a ssenbly is raised by 40C find average sheer stress produced in 10 mm diameter pins.
( 1 ) Two copper bars & one aluminium bar are

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