1.

45. A physical balance has its arms of unequal length. A body weighs 18 kg if kept in one pan and weighs 8 kg fkept in the other pan. The true weight of the body is(1) 13 kg(3) 10 kg(2) 12 kg(4) 16 kg

Answer»

True weight of body should be = sqrt (18 * 8)

= sqrt (144)

= 12 kg

ans is correct but how do you calculate it ? which concept is used here?!



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