Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumnumerical

Find percentage increase in moment of inertia of an iron ring heated by $2 0^{\circ} C . α = 11 \times 1 0^{- 6}$ per °C.

Answer:

0.04

Solution:

At fixed mass, $\frac{I ^{'}}{I} = (1 + α Δ T)^{2}$ . First-order percent increase $= 100 (2) (11 \times 1 0^{- 6}) (20) = 0.044%$ .

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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