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## Homework Statement

A spring with spring constant 18.39 N/m hangs from the ceiling. A 452 g ball is attached to the spring and allowed to come to rest. It is then pulled down 4.62 cm and released. What is the time constant if the ball’s amplitude has decreased to 2.85 cm after 32 oscillations?

## Homework Equations

A^2=Ao^2e^-t/2T

## The Attempt at a Solution

I solved for time which is t=32*period. I solved for period from spring constant and mass. Now I have -t/(ln(2.85^2/4.62^2)*2)= T but I got the wrong answer. Can someone help me please? Thank you.