CAPE Applied Mathematics Unit 2 · 2014 · Paper 2 · Question 5(b)(iii)
A particle of mass m kg rests on a horizontal plane. Resultant force S of the normal and frictional forces is at angle λ to the normal. Force P inclined at angle α to the plane is applied until it is just about to move.
Determine the LEAST value of P in terms of m when α = 30°.
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