A theatre spotlight hangs from a horizontal lighting bar that can rotate about a pivot at one end. The weight of the spotlight acts vertically downwards. The spotlight is moved from a position 1.20 m from the pivot to a position 0.60 m from the pivot.
Which statement about the moment of the spotlight's weight about the pivot after it is moved is correct?
The moment is halved because the perpendicular distance is halved
The moment decreases by 0.60 Nm because the perpendicular distance decreases by 0.60 m
The moment is unchanged because the spotlight is still on the same side of the pivot
The moment is doubled because the moment is inversely proportional to the perpendicular distance
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.