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Toranc3
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Homework Statement
A 115kg mail bag hangs by a vertical rope 3.3m long. A postal worker then displaces the bag to a position 2.2m sideways from its original position, always keeping the rope taut.
As the bag is moved to this position, how much work is done by the rope?
Homework Equations
W=F*d
The Attempt at a Solution
Tx=-Tcos(theta)
Ty=Tsin(theta)
W=-Tcos(theta)*d
T/3.3m =mg/2.5m to get T
I wanted to know why this is zero. Doesn't the Tension have a negative component in the opposite direction of motion, so the work done will be negative. The answer is zero but I just wanted an explanation on this one. Thanks!