The crate shown is held against wedge B by a spring. The spring is 93.5% of its original uncompressed length 1 = 2.25 m, and the spring constant is given as k = 1650 N/m. The coefficient of static friction at all contacting surfaces is μ = 0.150. The mass of the crate is m = 24.0 kg . The angle is 0 = 10.0°. 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 03 y 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) Nc= Submit μA Value Submit Part B - Finding the smallest horizontal force P to move the crate upward P= Value Units 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) μÀ ? Units ?

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
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The crate shown is held against wedge B by a spring.
The spring is 93.5% of its original uncompressed
length 1 = 2.25 m, and the spring constant is given
as k = 1650 N/m. The coefficient of static friction
at all contacting surfaces is µ = 0.150. The mass
of the crate is m = 24.0 kg. The angle is
0 = 10.0°. 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
A
1 of 1
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
O
P =
Submit
μA
Value
Part B - Finding the smallest horizontal force P to move the crate upward
Units
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)
μA
Value
2
Units
?
?
Transcribed Image Text:The crate shown is held against wedge B by a spring. The spring is 93.5% of its original uncompressed length 1 = 2.25 m, and the spring constant is given as k = 1650 N/m. The coefficient of static friction at all contacting surfaces is µ = 0.150. The mass of the crate is m = 24.0 kg. The angle is 0 = 10.0°. 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 A 1 of 1 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 O P = Submit μA Value Part B - Finding the smallest horizontal force P to move the crate upward Units 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) μA Value 2 Units ? ?
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