A second's pendulum clock has a steel wire

PHYSICS · Subjective · CBSE · Physics · Oscillations · Oscillations

Problem

A second's pendulum clock has a steel wire. The clock is calibrated at 20°C. How much time does the clock lose or gain in one week when the temperature is increased to 30°C? αsteel=1.2×10−5 (∘C)−1\alpha_{\text{steel}} = 1.2 \times 10^{-5} \text{ (}^\circ\text{C)}^{-1} .

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