Posted by Nem on Tuesday, April 24, 2012 at 3:52pm.
A 2.20 kg mass attached to a spring oscillates with a period of 0.440 s and an amplitude of 16.5 cm.
(a) Find the total mechanical energy of the system
(b) Find the maximum speed of the mass.

Physics  Elena, Tuesday, April 24, 2012 at 4:41pm
x=A•sinωt
v =dx/dt = A•ω•cosωt
v(max) = A•ω,
where ω =2•π/T.
E (total) = m•(ω• A)^2/2 .