Recent content by Dunkodx

Because there are only conservative forces, so when the mass reaches the maximum amplitude (that is, when it is at position ##\frac{d}{2}##) the kinetical energy is ##0## because the mass has no velocity and there is only potential energy ##\frac{1}{2} k \left(\frac{d}{2}\right)^2##; that means...

@hutchphd: It was a typo, that ##E_m## is the same as all the other ##E## in the post. Sorry for the confusion.

Summary:: Doubt in a spring exercise Text of the exercise "a mass of ##m = 0.4 \ \text{kg} ## is attached to a spring and it oscillates horizontally with period ##T = 1.57 \text{s}##; the amplitude of the oscillation is ##d = 0.4 \text{m}##. Determine the spring constant, the total energy of...