(a) A block with a mass m is pulled along a horizontal surface for a distance x by a constant force F at an angle 0 with respect to the horizontal. The coefficient of kinetic friction between block and table is u. Is the force exerted by friction equal to u mg? If not, what is the force exerted by friction? (Assume 0 is measured above the horizontal.) This answer has not been graded yet. (b) How much work is done by the friction force and by F? (Don't forget the signs. Use the following as necessary: F for the magnitude of F, g, m, x, 0 and 4) W = (c) Identify all the forces that do no work on the block. (Select all that apply.) O friction f OF cos(0) OF sin(0) O mE (d) Let m = 2.00 kg, x = 4.50 m, 0 = 3.7°, F = 14.5 N, and u, = 0.400, and find the answers to parts (a) and (b). (Include appropriate signs.) We =|

(a) A block with a mass m is pulled along a horizontal surface for a distance x by a constant force F at an angle 0 with respect to the horizontal. The coefficient of kinetic friction between block and table is u. Is the force exerted by friction equal to u mg? If not, what is the force exerted by friction? (Assume 0 is measured above the horizontal.) This answer has not been graded yet. (b) How much work is done by the friction force and by F? (Don't forget the signs. Use the following as necessary: F for the magnitude of F, g, m, x, 0 and 4) W = (c) Identify all the forces that do no work on the block. (Select all that apply.) O friction f OF cos(0) OF sin(0) O mE (d) Let m = 2.00 kg, x = 4.50 m, 0 = 3.7°, F = 14.5 N, and u, = 0.400, and find the answers to parts (a) and (b). (Include appropriate signs.) We =|

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Description: (a) A block with a mass m is pulled along a horizontal surface for a distance x by a constant force F at an angle e with respect to the horizontal. The coefficient of kinetic frictionbetween block and table is u. Is the force exerted by friction equ

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter8: Potential Energy And Conservation Of Energy

Section: Chapter Questions

Problem 81AP: Repeat the preceding problem, but this time, suppose that the work done by air resistance cannot be...

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