A-LevelMathematicsMechanicsOct/Nov 2023Paper 4 Q35 Marks
A block of mass 10kg is at rest on a rough plane inclined at an angle of 30° to the horizontal. A force of 120N is applied to the block at an angle of 20° above a line of greatest slope (see diagram). There is a force resisting the motion of the block and 200J of work is done against this force when the block has moved a distance of 5 m up the plane from rest. [Figure 3]
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