Question

7. In a physics lab, you attach a 0.200-kg air-track glider to the end of an ideal spring of

negligible mass and start it oscillating. The elapsed time from when the glider first moves

through the equilibrium point to the second time it moves through that point is 2.60 s.

Find the spring's force constant.

Answer 1

$2T=2\pi\sqrt\frac mk,\implies$

$k=\frac{\pi^2m}{T^2}=0.29~\frac N{m}.$