A pendulum based clock keeps correct time in an aeroplane flying uniformly at a height h above the surface of the earth. The cabin temperature inside the plane is 10^(@)C. The same pendulum keeps correct time on the surface of the earth when temperature is 30^(@)C. Find the coefficient of linear expansions of the material of the pendulum. You can assume that h ltlt R (radius of the earth)

A pendulum based clock keeps correct time in an aeroplane flying unifo

1.	A pendulum based clock keeps correct time in an aeroplane flying uniformly at a height h above the surface of the earth. The cabin temperature inside the plane is 10^(@)C. The same pendulum keeps correct time on the surface of the earth when temperature is 30^(@)C. Find the coefficient of linear expansions of the material of the pendulum. You can assume that h ltlt R (radius of the earth)
Answer» ANSWER :`alpha=h/(10R)`