The plank of a seesaw is 8 m long and is supported at the centre. Neil – InterviewSolution

1.	The plank of a seesaw is 8 m long and is supported at the centre. Neil, who weighs 80 kgf sits at a distance of 3 m from the fulcrum. John sits 4 m from the fulcrum to balance the plank. What is John's weight?60
Answer» The plank of a seesaw is $8 m$ long and is supported at the centre. Neil, who weighs $80 kgf$ sits at a distance of $3 m$ from the fulcrum. John sits $4 m$ from the fulcrum to balance the plank. What is John's weight? 60

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