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Measuring Length

A meter rule ...

Question

A meter rule is supported at its centre. It is balanced by two weights, A and B. If A and B are placed at a distance 30 cm, and 60 cm from the centre of scale, find the weight of B. The weight of A is 50N.

A

20 N

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B

30 N

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C

25 N

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D

40 N

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Solution

The correct option is C
25 N

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