20 Kg box is raised 0.75m by a constant 25N force applied at the end of the cord if the pulleys are massless, determine work done on the crate. What is the power delivered at the end of the cord at this point?
Identical pulley system
W=Fd I found that W=20(9.81)*0.75 = 147.15 J
The Attempt at a Solution
I am having trouble with the power portion, I am not sure how to find the correct velocity to apply also confused as to which force the 25N or the 20(9.81)
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