00:01
Hello everyone.
00:02
It is given in the question that there are two identical bar magnets and force between them is equal to 4 .8 and their centers are r meter apart.
00:14
So we can say that distance is equal to r.
00:19
Now, it is given in the question that if the distance has been increased, so we can say that d2 is increased to 2r, then force will become.
00:37
Coming to the solution part, we'll try to find the value of f2.
00:42
Since we know that, force is inversely proportional to r squared.
00:47
Now, here we can write f1 upon f2 that is equal to r2 upon r1.
00:57
So, r2, final distance, that is 2 over and initial distance is r.
01:04
So we can write f1 is equal to 4 multiplied by f2...