posted by Chan on .
Hi! please help
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?
(b) How much work is done by the rope on the sledge?
(c) What is the mechanical energy lost due to friction?
Thank you so much
remember the rope lifts (reduces force normal) and pulls the sled. So break up the pulling force into vertical and horizontal components.
I will be happy to critique your thinking.