Question

why the length of a simple pendulum decrease in winter and increase in summer?? basically we know length is unchanged.but whats the reason for this change? please explain with examples

Answer 1

Answer on Question #49214-Physics-Mechanics-Kinematics-Dynamics

Why the length of a simple pendulum decrease in winter and increase in summer?? Basically we know length is unchanged. But what's the reason for this change?

Answer

The length of a simple pendulum depends on a temperature:

$$l = l _ {0} (1 + \alpha T),$$

where $T$ is the temperature and $\alpha$ is the linear coefficient of thermal expansion.

$$[ \alpha ] = K ^ {- 1}.$$

During winter the temperature decrease and length of a simple decrease too. During summer the temperature increase and length of a simple increase too.

http://www.AssignmentExpert.com/