Question

4. A metre scale is supported at the centre. It is balanced by two weights A and B as shown
in figure below, find the distance of B from the pivot​

Answer 1

Given that,

A metre scale is supported at the centre.

We need to calculate the distance of B from the pivot​

Using formula of moment

$W\times d=W\times d'$

Where, W = weight of A

W' = weight of B

d = distance of A from the pivot

d' = distance of B from the pivot

Put the value into the formula

$20\times 4=25\times x$

$x=\dfrac{20\times4}{25}$

$x=3.2\ cm$

Hence, The distance of B from the pivot​ is 3.2 cm.

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Topic : moment

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