00:01
Hello, here we have to solve the following problem.
00:02
Block with a mass of m, that's 0 .49 kilograms, is pressed against a spring with constant k1, which is 567 newton per meter.
00:17
And that's compressed by the distance of 0 .1 meter.
00:26
There is a second spring, k2, which is 135 newton per meter.
00:34
And it's very important that there is no friction.
00:37
First of all, we have to calculate the distance d2 by which this second spring will be compressed.
00:48
Let's do this.
00:48
So here, the potential energy of the first spring when is deformed equals to the potential energy of the second spring when is deformed.
00:58
Therefore, d2 is d1 times square root of k1 over k2.
01:06
That is 0 .25 to 049 meters which is roughly 0 .2020 meters.
01:54
Now we have to calculate the speed v when the blocks tries the second spring.
02:04
So here the initial potential energy equals to the kinetic energy of the block...