A 1.6 m shelf has a weight of 120 N that acts vertically downwards at its midpoint. A pivot is positioned 0.50 m from the left-hand end of the shelf. An 80 N weight is to be attached to the left of the pivot to keep the shelf horizontal. The available attachment points are at perpendicular distances of 0.20 m, 0.30 m, 0.45 m and 0.50 m from the pivot.
What is the perpendicular distance from the pivot to the attachment point that should be used?
0.45 m
0.30 m
0.20 m
0.50 m
124 exam-style questions on AQA GCSE Physics 5.4 Moments, levers and gears, covering 5.4 Moments, levers and gears. Each one has a worked solution and a mark scheme showing where the marks go.