Physics

A meter scale is balanced in horizontal position as shown in figure below. Find the value of w.

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From the given figure we can see that,

Anticlockwise moment = 6 kg × 60 cm
Clockwise moment = w × 40 cm

As we know, the principle of moments states that

Anticlockwise moment = Clockwise moment.

$6 \times 60 = \text{w} \times 40 \\[0.5em] \Rightarrow \text{w} = \dfrac{6 \times 60}{40}\\[0.5em] \Rightarrow \text{w} = 9 \text{ kg} \\[0.5em]$

Hence, the value of w = 9 kg

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