please solve To use the equations of equilibrium to analyze a system containing
ID: 1828229 • Letter: P
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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 93.0% of its original uncompressed length l = 2.00 m, and the spring constant is given as k = 1550 N/m. The coefficient of static friction at all contacting surfaces is us = 0.130. The mass of the crate is m = 30.0 kg. The angle is theta = 14.0 degree . Neglect the mass of the wedge. Assume the crate only moves in the y direction and that wedge A cannot move. Determine the normal force Nc that the crate exerts on the wedge when the system is at rest. Your answer 510 N was either rounded differently or used a different number of significant figures than required for this part. Smallest Horizontal Force P to Move the Crate Upward Determine the magnitude of the smallest horizontal force cmphP that is necessary to begin moving the crate upward.Explanation / Answer
On face AB, net downward force (along AB) is = component of (weight+spring) + component of friction = NcSin14 + 0.13*NcCos14 = 188.2 N
Horizontal force to move the block upwards is thus, 0.13*Nc + 188.2/cos14 = 260.4 N
LET ME KNOW IF YOU NEED EXPLANATION FOR THIS. i am pretty confident that this is correct answer.
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