2) On your birthday, your friends stack two presents, A and B, on a horizontal surface. A ribbon is tied to the upper right corner of block A. Assume the packages can only move horizontally and that ui-s = 0.4, µ1-k = 0.35, µ2-s = 0.2, µ2-k = 0.15, ma = 10 kg and mg = 1 kg. Determine if package A will slip if you pull on the ribbon with a force T = 30 N. Be sure to include an FBD and IRD. > If package A slips, determine the acceleration of the package when you pull on the ribbon. > If package A does not slip, determine whether both packages slip on the floor when you pull on the ribbon (this would require a new FBD and IRD of the entire system). If they slide, compute the acceleration of the system. e = 45° 0.3 m 0.3m B. M2 す 2m

2) On your birthday, your friends stack two presents, A and B, on a horizontal surface. A ribbon is tied to the upper right corner of block A. Assume the packages can only move horizontally and that ui-s = 0.4, µ1-k = 0.35, µ2-s = 0.2, µ2-k = 0.15, ma = 10 kg and mg = 1 kg. Determine if package A will slip if you pull on the ribbon with a force T = 30 N. Be sure to include an FBD and IRD. > If package A slips, determine the acceleration of the package when you pull on the ribbon. > If package A does not slip, determine whether both packages slip on the floor when you pull on the ribbon (this would require a new FBD and IRD of the entire system). If they slide, compute the acceleration of the system. e = 45° 0.3 m 0.3m B. M2 す 2m

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 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

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