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A enanedannge on The cofcientfoni oughopreetthe ck omidng Ca te hr Ttr te .etf ty. ema t nd .ete

A enanedannge on The cofcientfoni oughopreetthe ck omidng Ca te hr Ttr te .etf ty. ema t nd .ete

College Physics
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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Part A A block lies on a plane raised an angle e fram the horizantal. Three forces act upon the block: Fw, the force of gravity. Fn. the narmal force; and Fr. the force of friction. The coefficient of friction is large enaugh to prevent the block from sliding (Figure 1). Consider coordinate system a, with the x axis along e plane. Which forces lie along the axes? O Ée arly O F, anly O F. only O ři and F. O ř and F. O řa and F. O ř and řa and ř. Submit Requect Ancwor Part B Which forces lie along the axes af the coordinate system b, in which the y axis is vertical? O F anly O F. anly O F. only O F and P, O ř and F. O F, and F. O řr and Fa and Ě, Submit Request Answer Usually the best advice is to choose a coordinate system so that the acceleration of the system is directly along one of the coordinate axes. If the system isn't accelerating, then you are better off choosing the coordinate system with the most vectors along the coordinate axes. But now you are gaing to ignore that advice. You will find the normal force, F, using vertical coordinate system b. In these coordinates you will find the magnitude F appearing in both the X and y equations, each multiplied by a trigonometric function. • Part C Because the block is not moving, the sum of the V components of the forces acting on the black must be zerp. Find an expression for the sum of the y components of the forces acting on the block, using cpordinate svstem b. Exprese your anewer In terma of aome or all of the varlablee F. F, F, and 0. • Vlew Avallable Hint(e) ? Submit Part D Because the block is not moving, the sum of the x components of the forces acting on the black must be zero. Find an expression for the sum of the X components of the forces acting on the block, using coardinate system b. Express your answer in terme of aome or all of the variablee F. F, Fe, and 8. • Vlew Avallable Hint(8) EF =0- Figure O 1 of 1 Submit Part E To find the magnitude of the normal force, you must express Fa in terms of Fe since Fr is an unknown. Using the equations you found in the two previous parts, find an expression for Fa invalving Fw and 0 but not Fr > Vlew Avallable Hint(e) VO TALO 1
Transcribed Image Text:Part A A block lies on a plane raised an angle e fram the horizantal. Three forces act upon the block: Fw, the force of gravity. Fn. the narmal force; and Fr. the force of friction. The coefficient of friction is large enaugh to prevent the block from sliding (Figure 1). Consider coordinate system a, with the x axis along e plane. Which forces lie along the axes? O Ée arly O F, anly O F. only O ři and F. O ř and F. O řa and F. O ř and řa and ř. Submit Requect Ancwor Part B Which forces lie along the axes af the coordinate system b, in which the y axis is vertical? O F anly O F. anly O F. only O F and P, O ř and F. O F, and F. O řr and Fa and Ě, Submit Request Answer Usually the best advice is to choose a coordinate system so that the acceleration of the system is directly along one of the coordinate axes. If the system isn't accelerating, then you are better off choosing the coordinate system with the most vectors along the coordinate axes. But now you are gaing to ignore that advice. You will find the normal force, F, using vertical coordinate system b. In these coordinates you will find the magnitude F appearing in both the X and y equations, each multiplied by a trigonometric function. • Part C Because the block is not moving, the sum of the V components of the forces acting on the black must be zerp. Find an expression for the sum of the y components of the forces acting on the block, using cpordinate svstem b. Exprese your anewer In terma of aome or all of the varlablee F. F, F, and 0. • Vlew Avallable Hint(e) ? Submit Part D Because the block is not moving, the sum of the x components of the forces acting on the black must be zero. Find an expression for the sum of the X components of the forces acting on the block, using coardinate system b. Express your answer in terme of aome or all of the variablee F. F, Fe, and 8. • Vlew Avallable Hint(8) EF =0- Figure O 1 of 1 Submit Part E To find the magnitude of the normal force, you must express Fa in terms of Fe since Fr is an unknown. Using the equations you found in the two previous parts, find an expression for Fa invalving Fw and 0 but not Fr > Vlew Avallable Hint(e) VO TALO 1
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