PHysics
posted by Vladimir .
What is the total energy of a 15kg mass attached to a spring oscillating horizontally with an amplitude of 20 cm and an angular frequency of 32 rad/s?

w^2 = k/m =>
k = m*w^2
=15*32^2
=15,360 n/m
E =(1/2)k*A^2
=(1/2)*15360*(.20)^2
=307 J
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