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A uniform metre suele of weight logfis pivoted at its o mark :-0 What moment of force de pressesthe rule ?(0) How can it be made houzontal byapplying a least fence ? |
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Answer» (i) Anticlockwise moment= 10gf × 50 cm = 500gf cm (ii) From the principle of moments, Anticlockwise moment = Clockwise moment 10gf × 50 cm = W × 100cm So, W = 10gf x 50cm/100cm = 5gf By applying a force 5 gf upwards at the 100 cm mark, rule can be made horizontal |
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