Question

A clock with an iron pendulum keeps correct time at 20°C.How much will it lose or gain if temperature changes to 40°C in six hours? (coefficient of cubical expansion for iron
=36×10^-6C°^-1)​

Answer 1

Answer:

10.3 seconds/day is the correct answer. coefficient of linear expansion of the pendulum = 12 × 10^-6 per °C.