Question

A uniform half meter rule is freely pivoted at the 15cm mark and it balances horizontally when a body of mass 50g is hung from the 4cm mark. Determine the mass of the half meter rule

Answer 1

Answer:

Anticlockwise moment = Clockwise moment

•4x = 20*21

x = 105 gf.

Thus, the weight of the metre rule is 105 gf.

•We know, one gf is the force acting on the body of mass 1 grams, thus mass of the body is 105 grams.

Explanation:

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