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NNADVOKAT [17]
3 years ago
15

the force of attraction between two magnets is inversely proportional to the square of the distance between them. when the magne

ts are r cm apart, the force of the attraction between is F newtons (N). if the distance between the magnets is increased by 400%, the force of magnets between them becomes cF N . Find the value of c.​
Mathematics
1 answer:
elena55 [62]3 years ago
3 0

The force of attraction between 2 magnets is inversely proportional to it's distance squared.

That means

f =  \frac{1}{ {r}^{2} }

so when the magnets are 4 times apart the resultant force is divided 8 times.

So,

\frac{f}{8}  =  \frac{1}{8} f

We can see here C=1/8.

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