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The crate shown is held against wedge B by a spring. The spring is 96.0% of its original uncompressed length l=2.75m, and the spring constant is given as k=1450N/m. The coefficient of static friction at all contacting surfaces is?s=0.150. The mass of the crate is m=28.0kg .

The angle is ? 15.0?.Neglect the mass of the wedge. Assume the crate only moves in they direction and that wedge A cannot move.

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