Learning Goal: The crate shown is held against wedge B by a spring. The spring is 93.5% of its original uncompressed length 1=2.00 m, and the spring constant is given as k=1350 N/m. The coefficient of static friction at all contacting surfaces is H₂=0.100. The mass of the crate is m = 30.0 kg. The angle is = 12.0° Neglect the mass of the wedge. Assume the crate only moves in the y direction and that wedge A cannot move.(Figure 1) Figure L. 1 of 1 > ▾ Part A - Determining the normal force exerted by the crate on the wedge Determine the normal force Nc that the crate exerts on the wedge when the system is at rest. Express your answer to three significant figures and include the appropriate units. ▸ View Available Hint(s) Ne=558 Submit HA Previous Answers P = 230 * Incorrect; Try Again; 5 attempts remaining ▾ Part B - Finding the smallest horizontal force P to move the crate upward N Determine the magnitude of the smallest horizontal force P that is necessary to begin moving the crate upward. Express your answer to three significant figures and include the appropriate units. View Available Hint(s) Provide Feedback PA Submit Previous Answers 13 ? N 13 ? X Incorrect; Try Again; 5 attempts remaining

Learning Goal: The crate shown is held against wedge B by a spring. The spring is 93.5% of its original uncompressed length 1=2.00 m, and the spring constant is given as k=1350 N/m. The coefficient of static friction at all contacting surfaces is H₂=0.100. The mass of the crate is m = 30.0 kg. The angle is = 12.0° Neglect the mass of the wedge. Assume the crate only moves in the y direction and that wedge A cannot move.(Figure 1) Figure L. 1 of 1 > ▾ Part A - Determining the normal force exerted by the crate on the wedge Determine the normal force Nc that the crate exerts on the wedge when the system is at rest. Express your answer to three significant figures and include the appropriate units. ▸ View Available Hint(s) Ne=558 Submit HA Previous Answers P = 230 * Incorrect; Try Again; 5 attempts remaining ▾ Part B - Finding the smallest horizontal force P to move the crate upward N Determine the magnitude of the smallest horizontal force P that is necessary to begin moving the crate upward. Express your answer to three significant figures and include the appropriate units. View Available Hint(s) Provide Feedback PA Submit Previous Answers 13 ? N 13 ? X Incorrect; Try Again; 5 attempts remaining

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 7.92RP: The test specimen AB is placed in the grip of a tension-testing machine and secured with a wedge....

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Learning Goal: To use the equations of equilibrium to analyze a system containing a wedge and to determine the necessary applied force to introduce motion into the system. The crate shown is held against wedge B by a spring. The spring is 94.0% of its original uncompressed length 1 = 3.00 m, and the spring constant is given as k = 1650 N/m. The coefficient of static friction at all contacting surfaces is μs = 0.100. The mass of the crate is m = 25.0 kg . The angle is 0 = 14.0°. Neglect the mass of the wedge. Assume the crate only moves in the y direction and that wedge A cannot move. (Figure 1) Figure B < 1 of 1 y L. Part A - Determining the normal force exerted by the crate on the wedge Determine the normal force No that the crate exerts on the wedge when the system is at rest. Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) Nc= Submit P = Value Part B - Finding the smallest horizontal force P to move the crate upward Submit…
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