Question

Find the weight of a metre scale balanced at 30 cm mark such that two weights one of 30gf and 10gf are suspended at 5 cm mark and 40 cm mark respectively.

Please give detailed answer shown step by step .
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Answer 1

Answer:52.5

Explanation:

Answer 2

Find the weight of a metre scale balanced at 30 cm mark such that two weights one of 30gf and 10gf are suspended at 5 cm mark and 40 cm mark respectively.

Answer :

Balanced at = 30 cm

Weight of a = 30 gf

Weight of b = 10 gf

=> Momentum of force is about = 0

=> 30gf × 25 cm = ( 10 gf ) ( 10 cm ) + w( 20 cm )

=>

$w = \frac{30 \times 25 - 10 \times 10}{20}$

$w = \frac{650}{20}$

$32.5gf$

[ In the image the diagram is given ] .

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