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A pendulum clock with a pendulum made of invar (alpha = 0.7 xx 10^(-6) ""^(@) C^(-1)) has period of 0.5 s and is accurate at 25^(@) C .if the clock is used in a country where the temperature average 35^(@) C , what correction is necessary at the end of a month (30 days) to the time given by the clock– |
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Answer» Solution : In time interval t, the clock will become slow by `Delta t = (1)/(2) alpha t Delta THETA` `= (1)/(2) XX 7 xx 10^(-7) xx 30 xx 86400 xx (35-25)` `= 9.1 s` |
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