The 12-lb collar B is at rest, and when it is in the position shown the spring is unstretched. Another 2-1b collar A strikes it so that B slides 4 ft on the smooth rod before momentarily stopping. The coefficient of restitution. between A and B is e = 0.4. (Eigure 1) Figure k = 20 lb/ft B 3 ft 1 of 1 > Part A Determine the velocity of A just after impact measured to the left. Express your answer to three significant figures and include the appropriate units. Enter positive value if the velocity is directed to the left and negative value if the velocity is directed to the right. (VA)2 = Submit Part B F = Value Request Answer μA i Determine the average force exerted between A and B during the impact if the impact occurs in 0.004 s. Express your answer to three significant figures and include the appropriate units. μA Value Units Units ? ?

The 12-lb collar B is at rest, and when it is in the position shown the spring is unstretched. Another 2-1b collar A strikes it so that B slides 4 ft on the smooth rod before momentarily stopping. The coefficient of restitution. between A and B is e = 0.4. (Eigure 1) Figure k = 20 lb/ft B 3 ft 1 of 1 > Part A Determine the velocity of A just after impact measured to the left. Express your answer to three significant figures and include the appropriate units. Enter positive value if the velocity is directed to the left and negative value if the velocity is directed to the right. (VA)2 = Submit Part B F = Value Request Answer μA i Determine the average force exerted between A and B during the impact if the impact occurs in 0.004 s. Express your answer to three significant figures and include the appropriate units. μA Value Units Units ? ?

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 7.5P: The contact surface between the 36-lb block and 20-lb homogenous cylinder is frictionless. Can the...

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The 2-1b collar is released from rest at A and slides down along the smooth rod as shown in (Figure 1). Figure 2 ft www. Part A If the attached spring has a stiffness 5 lb/ft, determine its unstretched length so that it does not allow the collar to leave contact with the top surface of the rod until 0= 60°. Express your answer in feet to three significant figures. 4 = Submit VO Provide Feedback ΑΣΦ Request Answer A ? ft
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