Science, asked by avinashmurmu99311, 3 months ago

calculate the mass of ruler

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Answered by tanishgupta886

0

Explanation:

τ = r×F.

Therefore, centre of mass of the ruler is 20 cm.

40*25 = M*20.

M = 50 grams.

Hence , the mass of the ruler is 50 grams .

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