February 20, 2017

Homework Help: physics

Posted by ali on Friday, February 25, 2011 at 4:47pm.

Batman, whose mass is 119 kg, is holding on
to the free end of a 14.6 m rope, the other
end of which is fixed to a tree limb above.
He is able to get the rope in motion as only
Batman knows how, eventually getting it to
swing enough that he can reach a ledge when
the rope makes a 52.4 angle with the vertical.
The acceleration of gravity is 9.8 m/s2 .
How much work was done against the force
of gravity in this maneuver?
Answer in units of J.

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