H2P-55
Elastic potential energy
H2 Physics · JC 1 · Medium · Elastic potential energy
A 0.50 kg mass oscillates on a horizontal spring obeying Hooke’s law with force equation F = −kx. The graph of F against x is a straight line through the origin with gradient −40 N m⁻¹. What is the elastic potential energy stored in the spring when the mass is at displacement 0.15 m from equilibrium?
- 0.45 J
- 0.30 J
- 0.90 J
- 1.80 J
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