Logan is standing on a dock holding onto a rope swing that is L=3.70 mlong and...
Logan is standing on a dock holding onto a rope swing that is L=3.70 mlong and suspended from a tree branch above. The rope is taut and makes a 30.0° angle with the vertical. Logan swings in a circular arc, passing through the bottom of the arc then releasing the rope when it makes an angle of θ=14.5° with the perpendicular. If Logan's mass is 79.0 kg, how much work Wgrav does gravity do on him up to the point where he releases the rope?
Wgrav=? J
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