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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
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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1:r9 ■■E9の 36 11:19 Lec. 14.pdf > 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
Transcribed Image Text:1:r9 ■■E9の 36 11:19 Lec. 14.pdf > 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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