00:01
Hello students, let's solve this question part by part.
00:03
So for the first part, we need to find out the gravitational potential energy.
00:09
For that the equation is ug is equal to m1 into g minus h plus m2 into g minus y.
00:21
So it is equal to minus of m1 h plus m2 into y g.
00:31
So this is equation for gravitational potential energy.
00:36
Now for the second part, since the total length of the string is l, we can write and the height is y.
01:14
So we can write l will be equal to y plus 2 into root of x square plus h square.
01:23
That is x square plus h square is equal to l minus y by 2 the whole square.
01:32
So here h will be equal to square root of l minus y by 2 the whole square minus x square.
01:43
So potential energy ug is equal to minus of m1 into root of l minus y divided by 2 the whole square minus x square plus m2 y into g...