A meter rule can be balanced about 60 cm mark by placing a block of weight ‘m’ g at 90 cm mark. Express the mass of ruler ‘W’ in terms of mass of the block.

W = m

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W = m/3

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W = 3m

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W = 2m

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Solution

The correct option is C
W = 3m

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A meter rule can be balanced about 60 cm mark by placing a block of weight ‘m’ g at 90 cm mark. Express the mass of ruler ‘W’ in terms of mass of the block.

The correct option is C W = 3m

The correct option is C
W = 3m