February 21, 2017

Homework Help: physic

Posted by Chan on Saturday, October 24, 2009 at 2:30am.

Please help me I have no idea how to do this problem at all.
Question:A sledge loaded with bricks has a total mass of 17.8 kg and is pulled at constant speed by a rope inclined at 20.8° above the horizontal. The sledge moves a distance of 20.6 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500.
(a) What is the tension in the rope?_ N

(b) How much work is done by the rope on the sledge?__ kJ

(c) What is the mechanical energy lost due to friction?__KJ

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