Problems: The 700-N force is applied to the 100-kg block, which is stationary before the force is applied. Determine the magnitude and direction of the friction force F exerted by the horizontal surface on the block. P= 700 N 100 kg 30° H, = 0.80 H = 0.60
Problems: The 700-N force is applied to the 100-kg block, which is stationary before the force is applied. Determine the magnitude and direction of the friction force F exerted by the horizontal surface on the block. P= 700 N 100 kg 30° H, = 0.80 H = 0.60
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:1:r9 ■■E9の
36
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nhas anatun
IXF, - 0
O In the absence of friction the middle
bleck, under the infuence of P.
F + 408.81) sin 30 - 459 - 0
F, - 263 N
weuld have a greater movement than
the 40-kg hlocek, and the friction
foror F, will be in the direction to
ppoe this motion as shown
Equilibrium of the 50-kg block gives, finally,
ISF, - 01
P+ 5009.81) sin 30 - 263 - 76.5 -0
P=938 N
Ans.
Thus, with P938 N, motion impends for the 50-kg and 40-kg blocks as a O We e now that F is less than
N- 272 N
unit.
120
ENGINEERING MECHANICS
FIRST YEAR
ASST.PROF. DR. WADHAH H. AL DOORI
Problems:
The 700-N force is applied to the 100-kg block, which
is stationary before the force is applied. Determine the
magnitude and direction of the friction force F exerted
by the horizontal surface on the block.
P= 700 N
100 kg
30°
H. = 0.80
H = 0.60
The system of two blocks, cable, and fixed pulley is
initially at rest. Determine the horizontal force P
necessary to cause motion when (a) P is applied to
the 5-kg block and (b) P is applied to the 10-kg block.
Determine the corresponding tension T in the cable
for each case.
Ans. (a) P = 137.3 N, T = 112.8 N
(b) P = 137.3 N, T = 24.5 N
%3D
P (a)
5 kg
10 kg
H, = 0.50
LIYP(b)
H, = 0.60
1/0
121
ENGINEERING MECHANICS
FIRST YEAR
ASST.PROF. DR. WADHAH H. AL DOORI
The three identical rollers are stacked on a horizontal
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