Two boys weighing 30kg and 50kg are sitting on either side of the fulcrum of a see saw at distance 2m and 3m respectively. Where should a man of 60kg must sit to balance the see-saw ?

Two boys weighing 30kg and 50kg are sitting on either side of the fulc

1.	Two boys weighing 30kg and 50kg are sitting on either side of the fulcrum of a see saw at distance 2m and 3m respectively. Where should a man of 60kg must sit to balance the see-saw ?
Answer» Solution : At equilibrium, `30bar(AO)+60bar(CO)=50bar(BO)` `30xx2+60x=50xx3` `60x=150-60=90` `:.""x=(90)/(60)=1.5m` The man has to SIT at 0.5 METRE from A.