00:01
Hello everyone, so let's start with the question.
00:03
The question says there is a moon which revolves around the earth in a circular orbit with radius of 3 .84 cross 10 to 8 meters.
00:10
It takes 27 .3 days for the moon to complete one orbit around earth.
00:17
So what is the centerpital acceleration? so far we have to find centipar acceleration.
00:21
So according to the formula, we know the centerpeter acceleration that is equal to v square by r here our v is velocity our v is velocity that is meter per second and r is radius radius of orbit which is in meter so let put the let put the value of ac equal to v square upon r so we don't know the value of velocity so first we have to find what velocity so as you know the velocity is equal to displacement upon time so it takes 2 pi r for a moon to complete one round.
01:05
So it takes 2 pi r so 2 pi r that is our distance and upon time.
01:12
Here our time having unit of second but in the question it gives in days so we have to convert days into second.
01:22
So as you know one day equal to 24 hours and to convert 2nd.
01:30
Convert the hours into second, we know that that one hour consists of 60 minutes and one minute is consists of 60 seconds.
01:42
So now put the value of this.
01:44
So 2 cross, we can write the value of pi in radiant form that is 22 by 7.
01:53
So 22 by 7 to make it easier.
01:57
Cross radius...