# An aluminum pendulum of length 1.2 m keeps accurate time at 24°C .You go on a winter vacation for 14 days. The average temperature of the house is 8°C. How far off will the clock be when you return, if #alpha = 25 * 10^-6 C°#? Is it fast or slow? #

##### 1 Answer

Dec 18, 2017

I tried this:

#### Explanation:

Cooling the pendolum will reduce its length so that the period will be affected as well.

The length will change by:

with your data:

so that the new length will be:

the period of the pendulum is:

at

at

So at