Frictionless pulley problem

[nguyenn2]

An old oaken bucket of mass 6.75 kg hangs in a well at the end of a rope. The rope passes over a frictionless pulley at the top of the well, and you pull horizontally on the end of the rope to raise the bucket slowly a distance of 4.00 m.

How much work do you do on the bucket in pulling it up?

 

[cristo]

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