Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter19: Temperature, Thermal Expansion And Gas Laws
Section: Chapter Questions
Problem 31PQ
Related questions
Question
7) Multiple-object systems with friction: Block A of mass 5.0 kg and block X are attached to a rope
which passes over a pulley, as shown in the figure. An 80-N force P is applied horizontally to block A,
keeping it in contact with a rough vertical face. The coefficients of static and kinetic friction between
the wall and block A are μs = 0.40 and μk = 0.30. The pulley is light and frictionless. The mass of
block X is adjusted until block A moves upward with an acceleration of 1.6 m/s2. What is the mass of
block X?
A) 9.9 kg B) 9.3 kg C) 8.7 kg D) 7.5 kg E) 8.1 kg
Transcribed Image Text:rough
Hs=0.403
M=0.30
X
A
P
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