00:01
In this question, we have an object which is attached to a string and it's moving about in a circle.
00:06
And the question i'm asked here, why doesn't move about in a circle? well, the string that the object is attached to provides a force directing it towards the centre of the circle.
00:19
Now, you can actually use this argument as well for the earth rotating around the sun or the moon around the earth, for example.
00:25
And that scenario gravity, gravitation or traction, provides the force directing it towards the center of the center of the earth.
00:31
The rotation.
00:32
Okay, so therefore, if you have force directed towards the center, you have an acceleration directed towards the center.
00:39
So this would change the direction of motion, but it won't change the speed...