Applied Mechanics and Graphic Statics
The ratio of kinetic energy and potential energy of a simple harmonic oscillator, at a displacement equal to half its amplitude is given by

0.043055555555556
0.12569444444444
0.042361111111111
0.084027777777778

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Applied Mechanics and Graphic Statics
Free body diagram is an

None of these
Isolated joint with only body forces acting on it
Isolated joint with internal forces acting on it
Isolated joint with all the forces, internal as well as external, acting on it

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