- #1
Romain Nzebele
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Homework Statement
A sledge loaded with bricks has a total mass of 18.0 kg and is pulled at constant speed by a rope inclined at 20.0° above the horizontal. The sledge moves a distance of 20.0 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500. How much work is done by the rope on the sledge?
Homework Equations
ΣF=ma, W=F.d
The Attempt at a Solution
I am not sure how to tackle this problem. Can I say that the work done on the sledge equal to zero because the acceleration of the sledge is zero and the force net is zero, or should I first calculate the tension of the rope and use this value to calculate the work done? I will appreciate any explanation. Thank you.