As shown in the figure, the coefficient of static friction for both wedge surfaces is 0.4 and that between the 30-kg concrete block and the 20° incline is 0.70. Determine the minimum value of the force P required to begin moving the block down the incline. Neglect the weight of the wedge. 5° P 30 kg 20°
As shown in the figure, the coefficient of static friction for both wedge surfaces is 0.4 and that between the 30-kg concrete block and the 20° incline is 0.70. Determine the minimum value of the force P required to begin moving the block down the incline. Neglect the weight of the wedge. 5° P 30 kg 20°
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 7.55P: A wedge is used to prop up the 6000-lb block of marble. The wedge angle is =30, and the angle of...
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As shown in the figure, the coefficient of static friction for both wedge surfaces is 0.4 and that between the 30-kg concrete block and the 20° incline is 0.70.
Determine the minimum value of the force P required to begin moving the block down the incline. Neglect the weight of the wedge.
Note: please show step by step working out. Also double check final answer please. As this is a dynamic question.
Please use sine rule to solve this. Thanks
![As shown in the figure, the coefficient of
static friction for both wedge surfaces is
0.4 and that between the 30-kg concrete
block and the 20° incline is 0.70.
Determine the minimum value of the force
P required to begin moving the block
down the incline. Neglect the weight of the
wedge.
5°
P
30 kg
20°](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb15d15d9-e398-4283-aed7-d6fa30a19f66%2F4bebebc0-0a8b-47af-ac34-7934f3b7373b%2Fwye3sl_processed.jpeg&w=3840&q=75)
Transcribed Image Text:As shown in the figure, the coefficient of
static friction for both wedge surfaces is
0.4 and that between the 30-kg concrete
block and the 20° incline is 0.70.
Determine the minimum value of the force
P required to begin moving the block
down the incline. Neglect the weight of the
wedge.
5°
P
30 kg
20°
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