Mathematics (AS & A Level) · Oct / Nov 2023 · Paper 42 · Question 3
9709
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30Å 120 N 20Å 10 kg A block of mass 10kg is at rest on a rough plane inclined at an angle of 30Å to the horizontal. A force of 120N is applied to the block at an angle of 20Å 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 5m up the plane from rest. Find the speed of the block when it has moved a distance of 5m up the plane from rest. [5]
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