00:01
Hi there.
00:01
So for this problem, we are given that the force is equal to a constant k that we need to determine divided by the distance d to the square.
00:12
Well, let's call that the distance x.
00:16
Okay.
00:18
X to the square.
00:20
So, we are told to suppose that two magnets are 0 .04 meters apart, so this will give us the value of x.
00:34
And the force is also given that is 4 newtons.
00:40
So with that said, if we solve for the constant k, we have that that is the pretty between the force and x squared.
00:48
So that will be 4 times x, which is 0 .04, and that to the square.
00:58
So using our calculator, we obtain a.
01:05
Value of 6 .4 times 10 to the minus 3.
01:13
This in, well, this should be in units of newtoms times meters square.
01:19
So with that said, what we need to find is the work, so the word done, that is required from a distance of 0 .03 apart to a distance of 0 .1 meters apart.
01:37
So with that said, remember that the word done is the integral of the force times the differential and the displacement...