Question

A false balance has equal arms. An object weighs X when placed in one pan and Y when placed in other pan, then the weight W of the object is equal to

Options

• `sqrt(xy)`

• `(X + Y)/2`

• `(X^2 + Y^2)/2`

• `2/sqrt(X^2 + Y^2)`

Answer 1

`(X + Y)/2`

Explanation:

When the arms of a false balance are equal, W = `(X + Y)/2`