00:02
Hello, so you have a motion in a horizontal circle, so there is something that is, what do we have? i have a ball, right? just undergoing this horizontal motion, okay? so as it goes through that motion, there's going to be tension in the string, in the direction, it's going to be towards the center.
00:30
So now we're trying to find a tension, so we need to figure out the force is acting.
00:36
Okay, so of course we have the tension the weight is always acting down so here we can set up an equation so there is no force here in the opposite direction and so the result and force on this is just t so the result and forth we're talking about the force towards the center right because this is undergoing circular motion so the result and force has to be towards the center so here the weight is not going to matter right because if you try to resolve the weight towards the center is going to be zero.
01:14
So our focus is just going to be a tension and that is going to be equal to the centimeter of force.
01:19
So tension is going to be equal to mv squared over r.
01:24
Let's look at the parameters we have.
01:26
We have mass to be 0 .25 kilograms.
01:33
We have radius 0 .5.
01:39
And then we have period to be one second.
01:49
So we have mass, we have radar, but we don't have velocity.
01:53
A velocity is r omega.
02:00
It means that b squared is r squared omega squared...