Physics
A uniform metre rule balances horizontally on a knife edge placed at the 58 cm mark when a weight of 20gf is suspended from one end. (i) Draw a diagram of the arrangement. (ii) What is the weight of the rule?
Force
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Answer
(i) Diagram of the arrangement is shown below:
(ii) As we know, the principle of moments states that
Anticlockwise moment = Clockwise moment.
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