Which Ball Is the Lowest Weight?

Read a thorough breakdown on Which Ball Is the Lowest Weight.

If both of the weighed balls are equal, the last ball is the heavier one. Brian – this would be correct if you in fact were using a weighing scale, and not a balance scale. The ability to weigh one group against another with a balance scale allows Marty’s answer to be a correct answer.

Which is the heavier ball 1 or 3?

Find the heavier ball. Answer: For convenience sake, let’s name the balls 1-8. First we weigh {1,2,3} on the left and {4,5,6} on the right. There are three scenarios which can arise from this. If the left side is heavier, then we know that one of 1, 2 or 3 is the heavier ball.

How many tries to balance a balance scale?

The fewest number of tries on using a balance scale would be one. If you put one ball on each side and one is heavier, you have the found the heavier ball. Use an equilateral triangular lamina which is of uniform mass throughout. It is balanced on a pole or a similar structure.