A-LevelMathematicsMechanicsMay/June 2022Paper 4 Q35 Marks
A crate of mass 300kg is at rest on rough horizontal ground. The coefficient of friction between the crate and the ground is 0.5. A force of magnitude XN, acting at an angle α above the horizontal, is applied to the crate, where sin α = 0.28. Find the greatest value of X for which the crate remains at rest.
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