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Name: 20. A 10-pound weight is lying on a sit-up bench at the gym. If the be
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Description: 20. A 10-pound weight is lying on a sit-up bench at the gym. If the bench is inclined at an angle of 11 degrees, there are three forces acting on the weight. N is called the normal force and it acts in the direction perpendicular to the bench. F is t

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter8: Applications Of Trigonometry

Section8.2: The Law Of Cosines

Problem 3E

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20. A 10-pound weight is lying on a sit-up bench at the gym. If the bench is inclined at an angle of 11 degrees, there are three forces acting on the weight. N is called the normal force and it acts in the direction perpendicular to the bench. F is the force due to friction that holds the weight on the bench. If the weight does not move, then the sum of these three forces is 0. Find the magnitude of N and the magnitude of F. Apply the rules regarding the use of significant digits when determining your answers. N= ? And F=? Lbs

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