A physical balance has its arms of length 40cm and 20cm. What weight kept the pan of longer arm will balance an object of 50gf keypt on other pan.

A physical balance has its arms of length 40cm and 20cm. What weight k

1.	A physical balance has its arms of length 40cm and 20cm. What weight kept the pan of longer arm will balance an object of 50gf keypt on other pan.
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A physical balance has its arms of length 40cm and 20cm. What weight kept the pan of longer arm will balance an object of 50gf keypt on other pan. ​

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A physical balance has its arms of length 40cm and 20cm. What weight kept the pan of longer arm will balance an object of 50gf keypt on other pan.