Question

The force of repulsion between the south poles of two magnets is inversely proportional to the square of the distance between them. If the distance between the magnets doubles, what is the effect on the force?

Answer 1

F = k / x^2 where k is a constant and x = distance

so if we double the distance x what happens to the value of F?

Answer 2

- replace the x in the formula by 2x

Answer 3

Well if we double the distance doesn't the force get weaker?

Answer 4

@welshfella

Answer 5

yes - but by how much?

Answer 6

replace x in the formula by 2x

Answer 7

F = k / (2x)^2 = ?

Answer 8

what is the square of 2x?

Answer 9

the force is squared?

Answer 10

Dont jump to conclusions simplify the formula first