A uniform steel girder, XYXYXY, has a total length of 8.48.48.4 metres. The girder is balanced horizontally on a hydraulic jack positioned at its midpoint, MMM. A welding unit with a mass of 75 kg75\text{ kg}75 kg is positioned on the girder at a distance of 2.82.82.8 metres to the left of MMM. A portable generator with a mass of 120 kg120\text{ kg}120 kg is placed at a distance yyy metres to the right of MMM such that the system remains in static equilibrium.
Find yyy.
Select your answer from the following choices:
1.50 m1.50\text{ m}1.50 m
1.75 m1.75\text{ m}1.75 m
2.10 m2.10\text{ m}2.10 m
4.48 m4.48\text{ m}4.48 m
Practise Edexcel A Level Maths Moments with exam-style questions for A Level Maths. 18 questions covering Moments, Resultant Moments, Equilibrium, Centres of Mass, and Tilting, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.