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Thermal expansion

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By Expert Faculty of Sri Chaitanya
Question

A clock pendulum made of invar has a period of 2s at 20oC. If the clock is used in a climate where average temperature is 40oC, what correction (in seconds) may be necessary at the end of 10 days to the time given by clock? αinvar =7×107 C1,1 day =8.64×104s

Moderate
Solution

T=2πlgΔTT=12Δll=12αΔθΔT=T2(αΔθ)=10×8.64×10427×107(20)=6s


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Similar Questions

A clock pendulum made of invar has a period of 2 s at 20oC.If the clock is used in a climate where average temperature is 40oC, what correction (in seconds) may be necessary at the end of 10 days to the time given by clock? αinvar =7×107C1, day =8.64×104s

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