Question

A physical balance has its arms of length 60 cm and 40 cm. What weight kept on a pan of longer arm will balance an object of weight 100 gf kept on other pan?

April 5, 2024

Answer

As we know, the principle of moments states that

Anticlockwise moment = Clockwise moment

100 gf × 40 cm = W × 60 cm

⇒ W = $100×40\over60$ = 66.67 gf

So, a weight of 66.67gf kept on the pan of longer arm will balance the object of weight 100 gf kept on the other pan.

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