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In a Roman steelyard, the weight of the rider is 25 dyne. When an unknown load is attached 5 cm from the point of suspension, the rider had to be move

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In a Roman steelyard, the weight of the rider is 25 dyne. When an unknown load is attached 5 cm from the point of suspension, the rider had to be moved by 35 cm. Calculate the unknown load
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For Roman steelyard
`L=(RxxOH)/(HA)`
Where L = unknown load
OX = distance moved by rider.
HA = distance of the load from point of suspension
`:. L = (25 "dyne"xx 35 cm )/(5 cm)=175 ` dyne
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