Problem 2.11 As shown in Fig. 2.23, consider a block thatweighs W. Due to the effect of gravity, the block is slidingdown a slope that makes an angle 0 with the horizontal.The coefficient of kinetic friction between the block and theslope is .Show that the magnitude of the frictional force generatedbetween the block and the slope is f = Hx W cos 0.der a blockWtal surface.petween thene minimumrd the right?Fig. 2.23 Problem 2.11der a blockis trying toqurface by apply-of externallyblom ? 12 As shown in Fig. 2.24, a person Problem 3.4 Figure 3.32 illustrates a simplified version of ahamstring strength training system for rehabili tation andathlete training protocols. From a scated position, a patientor athlete flexes the lower leg against a set resistance providedthrough a cylindrical pad that is attached to a load. Forthe position illustrated, the lower leg makes an angle 0 withthe horizontal. Point O represents the knee joint, point A isthe center of gravity of the lower leg, W is the total weight ofthe lower leg, F is the magnitude of the force applied by thepad on the lower leg in a direction perpendicular to theaFig. 3.33 An athlete performing lower arm exDetermine the net moment generatjoint, when the lower arm is extendewhen the long axis of the lower arm30° and f = 60°, respectively, with theAnswer:Mnet (0=0°) =49.5 N-m; Mpet(0=30°)Mpet (0=60°) =24.8 N-m.WProblem 3.6 Figure 3.34 illustratesdesigned to test the strength of maillustrated, an intertrochanteric nail tha

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Problem 2.11 As shown in Fig. 2.23, consider a block that weighs W. Due to the effect of gravity, the block is sliding down a slope that makes an angle 0 with the horizontal. The coefficient of kinetic friction between the block and the slope is . Show that the magnitude of the frictional force generated between the block and the slope is f = W cos 0. a block surface. een the inimum e right?

Problem 2.11 As shown in Fig. 2.23, consider a block that weighs W. Due to the effect of gravity, the block is sliding down a slope that makes an angle 0 with the horizontal. The coefficient of kinetic friction between the block and the slope is . Show that the magnitude of the frictional force generated between the block and the slope is f = W cos 0. a block surface. een the inimum e right?

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.50P: The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the...

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