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A flase balance has equal arms. An object weights `W_1` when placed in one pan and `W_2` when placed in the other pan. The true weight `W` of the object is.A. `sqrt(xy)`B. `(x+y)/(2)`C. `(x^(2)+y^(2))/(2)`D. `(sqrt(x^(2)+y^(2)))/(2)` |
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Answer» Correct Answer - B Let the weights of the pans be `W_(1)` and `W_(2)` and true weight be `W`. Then `(W+W_(1))l=(x+W_(2))l`…..(`1`) and `(W+W_(2))l=(y+W_(1))l`…….(`2`) `implies W=(x+y)/(2)` |
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