Physics Work Question on Sapling...Please Help!!?

Posted on 2015-12-01 07:05:00 in Physics by SRAH

A cart for hauling ore out of a gold mine has a mass of 451 kg, including its load. The cart runs along a straight stretch of track that is sloped 4.17° from the horizontal. A donkey, trudging along and to the side of the track, has the unenviable job of pulling the cart up the slope with a 415-N force for a distance of 119 m by means of a rope that is parallel to the ground and makes an angle of 13.9° with the track. The coefficient of friction for the cart\'s wheels on the track is 0.0183. Use g = 9.81 m/s2. Find the work that the donkey performs on the cart during this process.

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