2. Determine the velocity of the 60-lb block A if the two blocks are released from rest and the 40-lb block B moves 2 ft up the incline. The coefficient of kinetic friction between both blocks and the inclined planes is H =0.10 Use Constraint Equations (for pulley), Equation of Motion (Newton's second law), and the Principle of Work and Energy. ( )ya +( )y, =l ( )Aya +( Ayb = 0 ()Aya = ( JUB %3D ( )va = ( )vB Block A and B %3D T+u1-2 = T, 0+( 0+( )-( = }( )%+( %3D VA = ( ) ft/s direction ) ft/s direction %3D

2. Determine the velocity of the 60-lb block A if the two blocks are released from rest and the 40-lb block B moves 2 ft up the incline. The coefficient of kinetic friction between both blocks and the inclined planes is H =0.10 Use Constraint Equations (for pulley), Equation of Motion (Newton's second law), and the Principle of Work and Energy. ( )ya +( )y, =l ( )Aya +( Ayb = 0 ()Aya = ( JUB %3D ( )va = ( )vB Block A and B %3D T+u1-2 = T, 0+( 0+( )-( = }( )%+( %3D VA = ( ) ft/s direction ) ft/s direction %3D

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 7.79P: The coefficient of rolling resistance between the 30-kg lawn roller and the ground is r=0.1. (a)...

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