ST7.20 Energy in SHM

A particle is in simple harmonic motion along the x-axis. The amplitude of the motion is xm. At a particular point in the cycle its kinetic energy is K=5J and its potential energy (measured with U=0 at x=0) is U=3J. When it is at x=xm, the kinetic and potential energies are:
Incorrect
Incorrect
Incorrect
Correct
Incorrect

[There is ONE correct answer above. Choose the one you think is correct and press the "Check Your Answer" button below to see if you are right.]