This document discusses a physics equation for simple harmonic motion where the restoring force (Fsp) is proportional to the displacement (x) from equilibrium and discusses applying this to oscillating springs. It also references questions 1, 2, and 4 from page 220-221 that may involve using this equation.

7. P E sp = 1/2 K
2
X

8. F sp
F sp
Fg
F sp
Fg
Fg

9. 220
Q1, Q2

10. -
FT
FT
F
Fg
Fg

12. 221
Q4