PROBLEM 5: The upper block is attached to the ground as shown in the figure by a short rope. The coefficient of friction between the blocks is 0.25 while the angle of friction between the lower block and the horizontal ground is 30°. (a) Determine the tension in the rope, in N, when the lower block is about to move. (b) Determine friction force, in N, under the 900 N block when it is about to move. (c) Determine the horizontal force P, in N, required to initiate motion. 300 N P 900 N 30°
PROBLEM 5: The upper block is attached to the ground as shown in the figure by a short rope. The coefficient of friction between the blocks is 0.25 while the angle of friction between the lower block and the horizontal ground is 30°. (a) Determine the tension in the rope, in N, when the lower block is about to move. (b) Determine friction force, in N, under the 900 N block when it is about to move. (c) Determine the horizontal force P, in N, required to initiate motion. 300 N P 900 N 30°
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 7.8P: The brake pads at C and D are pressed against the cylinder by the spring BF. The coefficient of...
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