S MasteringPhysics: Ch 06 HW - Google Chrome A https://session.masteringphysics.
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S MasteringPhysics: Ch 06 HW - Google Chrome A https://session.masteringphysics.com/myct/itemView?assignmentProblemID=60670471 Physics for Science and Engineering I - Spring 2016 Close Ch 06 HW ) Problem 6.63 Resources * previous | 25 of 25 | return to assignment Problem 6.63 Calculate the work done on the suitcase by the friction force. A luggage handler pulls a 19.0-kg suitcase up a ramp inclined at 34.0 ° above the horizontal by a force F of magnitude 169 N that acts parallel to the ramp. The coefficient of kinetic friction between the ramp and the incline is 0.310. The suitcase travels 3.90 m along the ramp Express your answer with the appropriate units. H A s o o . 3) W = - 181 TD Submit My Answers Give Up Incorrect; Try Again; 5 attempts remaining Part E Calculate the total work done on the suitcase. Express your answer with the appropriate units. OH a o . ? sh Wnet = Value | Units Submit Mty Answers Give Up Part F If the speed of the suitcase is zero at the bottom of the ramp, what is its speed after it has traveled 3.90 m along the ramp? Express your answer with the appropriate units. C Start a GT al R i D 9:28 PM EExplanation / Answer
work = F * d = 169N * 3.90m = 659.1 J
work = mgh = 19kg * 9.8m/s² * 3.90m * sin34º = 406.07J
Work done by normal force = 0 always
D) friction work = µmgdcos
work = 0.310 * 19kg * 9.8m/s² * 3.9m * cos34º = 186.62 J
E) total work = (659.1 - 406.07 - 186.62) J = 66.41J
F) KE = 66.41 J = ½mv² = ½ * 19kg * v²
v = 2.64 m/s
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