17.3b MJ19 P42 Q3 Oscillating Spring Constant | A2 Oscillation | Cambridge A Level Physics

[@chinyuandrew7973]

16:10

[@nave3292]

for part aii, since EPE = 1/2 kx^2 then wouldn't EPE be maximum at the shortest spring length too? since the displacement from equilibirum is either 2.5 or -2.5 but its squared anyway