Question

A uniform metre scale is balanced at 20 cm mark, when a weight of 100 gf is suspended from
one end. Where must the weight be suspended ? Calculate the weight of the metre scale.

✔️help out please✔️
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Answer 1

Let w be the weight of metre scale.As the scale is balanced at 20cm and 100gf is suspended on one end (0 mark). The weight of longer arm i.e. BC is balanced by 100gf ∴

CW moment = A.C.W moment

W × 30 = 20 × 100W = 2000/30 = 66.66gf wt.

of 100gf should be be suspended at Zero...

Answer 2

Answer:

Let w be the weight of metre scale.As the scale is balanced at 20cm and 100gf is suspended on one end (0 mark). The weight of longer arm i.e. BC is balanced by 100gf

∴ CW moment = A.C.W moment

W × 30 = 20 × 100W = 2000/30 = 66.66gf

wt. of 100gf should be suspended at zero mark.