Mathematics (AS & A Level) · May / June 2023 · Paper 43 · Question 7

! Z Y X 2 m 1.8 m The diagram shows the vertical cross-section XYZ of a rough slide. The section YZ is a straight line of length 2m inclined at an angle of ! to the horizontal, where sin ! = 0.28. The section YZ is tangential to the curved section XY at Y, and X is 1.8m above the level of Y. A child of mass 25kg slides down the slide, starting from rest at X. The work done by the child against the resistance force in moving from X to Y is 50J.

Read automatically from the paper; the printed page above is exact.