Number 20 11. An airplane passenger carries a 215 newton suitcase up stairs, a displacement of 4.20 meters verticallyand 4.60 meters horizontally.How much work does the passenger do?a.215 N X 4.70m =903The same passenger carries the same suitcase hack doun the camG stairs, How much work doesb.the passenger do now? 75 Nx4. oY CO (8o903.JCo 180 =12. A rope is used to pull a metal box 15.0 meters across the floor, The rone is held at an angle of 46.0° withthe floor and a force of 628 newtons. How much work doeş the force (tension) on the rope do?D= 15 mE- 678N13. Which requires more work, carrying a 420-N knapsack up a 200 meter high hill or carrying a 210-Nknapsack up a 400 meter high hill? Why?di= Z00 Fidz=400. Fz =210N14. Lee pushed horizontally with a 80-N force on a 20-kg mass 10 meters628 NX 15.0m X Cos (46.0W= 6540 Jthey both done somework since woykis direetty Propotromal84,000Nw= gt oooNc of work Lee did.d= lomamount8o NXl omw= G 2 oss a floor. Calculate toF= 80N15. The third floor of a house is 8.0 meters above street level, How much work is needed to move a 150-kilogram refrigerator to the third floor?g-9.81mls150×9.81メ 811772J16. Stan does 176 J of work lifting himself 0.300 m. What is Stan's mass?m=150 K9W= 176 J176N- F F=586.666 N586.6669.8m/s?m=59.8639 Kg17. A crane lifts a 2.25 x 103-N bucket containing 1.15 m3 of soil to a height of 7.50 meters. Calculate thework the crane performs.18. Mike pulls a sled across level snow with a force of 225-N along a rope that is 35.0° above the horizontal.If the sled moved a distance of 65.3 meters, how work did Mike do?り-(5.ア。レ=7637.15 J725x 65.3 CoS35.Z25 x65 3 x0.819Angle =35o19. Karen has a mass of 57.0 kilograms and she rides up an escalator at Woodly Park Station of theWashington D.C. Metro. Karen rode a distance of 65.0 m, the longest escalator in the free world. Howmuch work did the escalator do on Karen if it has an inclination of 30.0°?20. An 845-N sled is pulled a distance of 185 meters. The task requires 1.20 x 104 J of work and is done bypulling on a rope with a force of 125-N. At what angle is the rope held?21. Chris carried a carton of milk, weight 10-N, along a level hall to the kitchen, a distance of 3.50 meters.How much work did Chris do?22. A 4200-N piano is to be slid up a 3.5-m frictionless plank that makes an angle of 30.0° with thehorizontal. Calculate the work done in sliding the piano up the plank?

Question

Accepted Answer

Given data:

The weight of sled is W=845 N.
The distance traveled by the sled is d=185 m.
The work…

20. An 845-N sled is pulled a distance of 185 meters. The task requires 1.20 x 104 J of work and is done by pulling on a rope with a force of 125-N. At what angle is the rope held?