Homework Help: Physics URGENT!!!

Posted by Anonymous on Monday, October 8, 2012 at 9:04pm.

A sled loaded with bricks has a total mass of 18.0 kg and is pulled at constant speed by a rope inclined at 40.0o above the horizontal. The sledge moves a distance of 16.0 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.510 .
(a) What is the tension in the rope?
b) How much work is done by the rope on the sled?
c)What is the magnitude of the force of friction?
d) What is the mechanical energy lost due to friction?

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