Find the horizontal force P to start the motion of any part of the system of three blocks resting upon one other as shown The uni
Find the horizontal force P to start the motion of any part of the system of three blocks resting upon one other as shown The uni
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:2. Find the horizontal force P to start the motion of any part of the system of three blocks resting upon one
another as shown. The weight of the blocks are W-300 KN, Ws= 100 KN and Wc =200 KN. Between A and B
μ=0.30, between C and B, μ =0.20 and between C and the ground, p=0.10.
1
sni brod nog
02.0-4
B
C
05.0-4
Solution: tamos quoy worla bre sosia
asquar
005
300 en of jells400
N₁-300
F3
N-300-
N₂=300
Assuming B and C will not move.
F₁ = 300 (0.30)
F₁ = 90 kN
ne à bns A zelboß 1
P = 90 kN
es ensla berb
hebnu 02.0- y elin 05.0= q V
in Celpris orllanimetsa MX 008
Assuming C will not move: al 1st
F2=400 (0.20) = 80 kN
OTE
Bm ribirte
F₂
vica
Assuming the three blocks move:
F3 = 0.10 (600)
F3 = 60 kN
P=60 KN
Least force is 60 kN.
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