A pendulum clock gains 24 seconds in 2 days and 4 hours. How long will it take to gain 9 minutes 4 seconds
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0
Answer:
2 days and 20 hours = 68 hoursUsing proportional method,68 : 20 :: x : 35 68 × 35 = 20xx = 68 ×35 /20x = 17 × 7x = 119 hours ANSWER = 119.
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Answered by
0
New time period will be given by
T
′
=2π
g
l(1+αΔT)
=2
1+αΔT
T
′
=2
1+(1.2×10
−5
)(−30)
≈2(1−18×10
−5
)s
Thus, time gained in a day is 24×3600×36×10
−5
s=15.55s.
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