physics
posted by pdaniel .
A 1.5 spider is dangling at the end of a silk thread. You can make the spider bounce up and down on the thread by tapping lightly on his feet with a pencil. You soon discover that you can give the spider the largest amplitude on his little bungee cord if you tap exactly once every 3 seconds.
What is the approximate spring constant of the silk thread?

Use T= 2pi(sqrt(m/k))
Solve for k
.010966277