Posted by Jeanne on .
A simple pendulum consists of a ball connected to one end of a thin brass wire. The period of the pendulum is 1.45 s. The temperature rises by 142 C°, and the length of the wire increases. Determine the change in the period of the heated pendulum.

Physics 
bobpursley,
assuming you have zero calculus.
period=2PI sqrt (l/g)
solve for original length l.
now, change in length=l*coeffexpansion*dTemp
now compute change in length.
add that to the oiginal length, compute new period, then change in period.
If you have calculus, it is straigthforward.