A ruler scale is balanced with two fingers, F1 and F2 at a separation – InterviewSolution

1.	A ruler scale is balanced with two fingers, F1 and F2 at a separation 20 cm and 40 cm from the centre of the scale O respectively. If the person balancing the ruler tries to bring his fingers closer to the centre, which finger will slide first?
Answer» A ruler scale is balanced with two fingers, $F_{1}$ and $F_{2}$ at a separation 20 cm and 40 cm from the centre of the scale O respectively. If the person balancing the ruler tries to bring his fingers closer to the centre, which finger will slide first?

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