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The skier's traverse A skier on a 30 degree hill covered in snow, slides down the hill from point A to point B, and then out toward point C. Point A is 3.000 m above the baseline, i.e., above the x-axis. (It's a fairly small hill for testing your skis.) Hint 9 A h= 3.000 m (30° B On the slope, the coefficient of sliding friction is nice and low, u1 = 0.06. from A to B. Out on "the flats," however, from point B to point C and beyond, the coefficient of friction is greater: they've sprinkled some fine sand on the snow for quicker slowdown, so µ2 = 0.21. (It is 10.00 m from B to C, so the diagram has a red squiggle to signify that the flats are not quite to scale.) The skier (m = 84.5 kg) starts from rest at point A, slides down the hill to point B and on out into the flats toward point C. TASKS: a. Calculate Fnet , the magnitude of the net force on the skier on the slope from A to B. b. Calculate vg, speed of the skier at point B, just before he gets onto the flats. HINT: It will probably be easier to work in the rotated (p, q) coordinates system, in which the p-axis points down the ramp and the q-axis points perpendicularly above the ramp, and for which, as an example the unit vectors are also rotated. E.g., p = i+ (-) ) . (Check out the unit vector concepts in Ch. 2.3 and 2.4, for a refresher.)

The skier's traverse A skier on a 30 degree hill covered in snow, slides down the hill from point A to point B, and then out toward point C. Point A is 3.000 m above the baseline, i.e., above the x-axis. (It's a fairly small hill for testing your skis.) Hint 9 A h= 3.000 m (30° B On the slope, the coefficient of sliding friction is nice and low, u1 = 0.06. from A to B. Out on "the flats," however, from point B to point C and beyond, the coefficient of friction is greater: they've sprinkled some fine sand on the snow for quicker slowdown, so µ2 = 0.21. (It is 10.00 m from B to C, so the diagram has a red squiggle to signify that the flats are not quite to scale.) The skier (m = 84.5 kg) starts from rest at point A, slides down the hill to point B and on out into the flats toward point C. TASKS: a. Calculate Fnet , the magnitude of the net force on the skier on the slope from A to B. b. Calculate vg, speed of the skier at point B, just before he gets onto the flats. HINT: It will probably be easier to work in the rotated (p, q) coordinates system, in which the p-axis points down the ramp and the q-axis points perpendicularly above the ramp, and for which, as an example the unit vectors are also rotated. E.g., p = i+ (-) ) . (Check out the unit vector concepts in Ch. 2.3 and 2.4, for a refresher.)

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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The skier's traverse A skier on a 30 degree hill covered in snow, slides down the hill from point A to point B, and then out toward point C. Point A is 3.000 m above the baseline, i.e., above the x-axis. (It's a fairly small hill for testing your skis.) Hint A h= 3.000 m (30° B On the slope, the coefficient of sliding friction is nice and low, H1 = 0.06. from A to B. Out on "the flats," however, from point B to point C and beyond, the coefficient of friction is greater: they've sprinkled some fine sand on the snow for quicker slowdown, so µ2 = 0.21. (It is 10.00 m from B to C, so the diagram has a red squiggle to signify that the flats are not quite to scale.) The skier (m = 84.5 kg) starts from rest at point A, slides down the hill to point B and on out into the flats toward point C. TASKS: a. Calculate Fnet , the magnitude of the net force on the skier on the slope from A to B. b. Calculate vg, speed of the skier at point B, just before he gets onto the flats. HINT: It will probably be easier to work in the rotated (p, q) coordinates system, in which the p-axis points down the ramp and the q-axis points perpendicularly above the ramp, and for which, as an example the unit vectors are also rotated. E.g., p = i + (-)) . (Check out the unit vector concepts in Ch. 2.3 and 2.4, for a refresher.)
Transcribed Image Text:The skier's traverse A skier on a 30 degree hill covered in snow, slides down the hill from point A to point B, and then out toward point C. Point A is 3.000 m above the baseline, i.e., above the x-axis. (It's a fairly small hill for testing your skis.) Hint A h= 3.000 m (30° B On the slope, the coefficient of sliding friction is nice and low, H1 = 0.06. from A to B. Out on "the flats," however, from point B to point C and beyond, the coefficient of friction is greater: they've sprinkled some fine sand on the snow for quicker slowdown, so µ2 = 0.21. (It is 10.00 m from B to C, so the diagram has a red squiggle to signify that the flats are not quite to scale.) The skier (m = 84.5 kg) starts from rest at point A, slides down the hill to point B and on out into the flats toward point C. TASKS: a. Calculate Fnet , the magnitude of the net force on the skier on the slope from A to B. b. Calculate vg, speed of the skier at point B, just before he gets onto the flats. HINT: It will probably be easier to work in the rotated (p, q) coordinates system, in which the p-axis points down the ramp and the q-axis points perpendicularly above the ramp, and for which, as an example the unit vectors are also rotated. E.g., p = i + (-)) . (Check out the unit vector concepts in Ch. 2.3 and 2.4, for a refresher.)
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