Calculating WorkThe equation for work is shown below. Force is the forceapplied to the object. Distance is the distance the objectmoves in the direction of the force while the force is actingMath SkillsA student lifts a bag from thefloor to his or her shoulder1.2 m above the floor, usingon it.a force of 50 N. How muchWork Equationwork does the student do onwork (in joules) = force (in newtons) x distance (in meters)the bag?W = Fda. This is what you know:force:F = 50 NThe force in the equation is in newtons (N), and distanceis in meters (m). The product of newtons and meters isdistance: d = 1.2 mnewton-meter (N-m). A newton-meter is a joule (J).b. You need to find:work: WEnergy and HeatHave you ever heard the phrase burning rubber? The tiresc. Use this formula:W = Fdd. Substitute the values forF and d into the formulaand multiply:of race cars are made of rubber. The tires and the road are incontact, and they move past each other quickly. Recall thatfriction is a force between two surfaces in contact with eachother. The direction of friction is in the opposite direction ofW = (50 N) × (1.2 m)the motion.= 60 N-m = 60 JFriction between a car's tires and the road causes some ofAnswer: The amount of workthe kinetic energy of the tires to transform into thermalenergy. If race cars are moving very quickly, thermal energyin the tires causes the rubber to give off a burnt odor.done is 60 J.6. Solve for WorkA student pulls out his or herchair in order to sit down.As a race car moves, energy is transformed and transferred.For example, a car's engine transforms energy from fuel andtransfers it to the wheel axle. In every energy transformationand every energy transfer, some energy is transformed intothermal energy. This thermal energy is transferred to thesurroundings. Thermal energy moving from a region ofhigher temperature to a region of lower temperature is calledheat. Scientists sometimes call this heat waste energy becauseThe student pulls the chair0.75 m with a force of 20 N.How much work does he orshe do on the chair?it is not easily used to do useful work.ision of The McGraw-Hill Companies, Inc.

Name: Calculating WorkThe equation for work is shown below. Force is the fo
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Description: Calculating WorkThe equation for work is shown below. Force is the forceapplied to the object. Distance is the distance the objectmoves in the direction of the force while the force is actingMath SkillsA student lifts a bag from thefloor to his or h

Given data: Force (F) = 20 N Displacement (d) = 0.75 m Required: Work (W)

Answered: A student pulls out his or her chair in…

Science

Physics

A student pulls out his or her chair in order to sit down. The student pulls the chair 0.75 m with a force of 20 N. How much work does he or she do on the chair?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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