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A block-spring system has spring constant 120 N/m, frequency 100Hz and mechanical energy 29.40 J. If...

A block-spring system has spring constant 120 N/m, frequency 100Hz and mechanical energy 29.40 J. If phase angle is zero, find ratio of the kinetic to potential energy and displacement is 0.5s.
A. 0.026, 0.691 m
B. 0.013, 0.550 m
C. 0.034, 0.870m
D. 0.130, 0.870m
E. 0.045, 0.770m
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