Questions
Two rods of same mass and same length lo but having different coefficient of expansions and 3 are joined at P (see figure). System is placed on frictionless surface. If
temperature of whole system is changed by , the displacement of junction point is
detailed solution
Correct option is C
Net force on the system is zero hence displacement of the centre of mass of the system will be zero.Let x be the shift in P, thenml∘2(1+αΔT)+x=ml∘2(1+3αΔT)−x⇒x=l0αΔT2∴ (3)Talk to our academic expert!
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