Solution: A 250 g mass on a spring oscillates with the following equation:
x(t) = (2.8 cm) cos((3.4 s-1)t)
How long does it take the spring to travel a distance of 18.3 cm?

Problem

A 250 g mass on a spring oscillates with the following equation:

x(t) = (2.8 cm) cos((3.4 s^{-1})t)

How long does it take the spring to travel a distance of 18.3 cm?