Number 13 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?103 J215NX 4.7om =a.0. The same passenger carries the same suitcase back down the same stairs. How much work doesthe passenger do now? z5 NY4,2OX COS 18 0COJ 180 = -レー-703J12. A rope is used to pull a metal box 15.0 meters acros the floor. The rope is held at an angle of 46.0° withthe floor and a force of 628 newtons. How much work does the force (tension) on the rope do?13. 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?14. Lee pushed horizontally with a 80-N force on a 20-kg mass 10 meters across a floor. Calculate toamount of work Lee did.15. 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?16. Stan does 176 J of work lifting himself 0.300 m. What is Stan's mass?17. A crane lifts a 2.25 x 10-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?19. 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?

Name: Number 13 11. An airplane passenger carries a 215 newton suitcase up s
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Description: Number 13 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?103 J215NX 4.7om =a.0. The same passenger carries the same suitcase

Given two forces F1= 420N and F2 = 210N And two displacement d1= 200m and d2 = 400m So we have to…

Answered: 13. Which requires more work, carrying…

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13. Which requires more work, carrying a 420-N knapsack up a 200 meter high hill or carrying a 210-N knapsack up a 400 meter high hill? Why?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter10: Work, Energy And Machines

Section10.1: Work And Energy

Problem 7PP

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a shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25 below the horizontal. The force is just sufficient to overcome various frictional forces, so the cart moves at constant speed, (a) Find the work done by the shopper as she moves down a 50.0-m length aisle, (b) What is the net work done on the cart? Why? (c) The shopper goes down the next aisle, pushing horizontally and maintaining the same speed as before. If the work done by frictional forces doesnt change, would the shoppers applied force be larger, smaller, or the same? What about the work done on the cart by the shopper?
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