A block of mass 5 kg rests on a rough plane inclined at 30° to the horizontal
PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A block of mass 5 kg rests on a rough plane inclined at 30° to the horizontal. The coefficient of static friction between the block and the plane is 0.40. A horizontal force F is applied to the block, directed up the plane. Determine the minimum magnitude of F needed to just start moving the block up the plane. (Take g = 9.8 m s⁻².)