- #1
Tom79Tom
- 45
- 3
Hi I have a scenario with which I wish to understand .
I have a ball on a string which is in uniform circular rotation at Tangential velocity v
Assume friction is not present
I now increase the centripetal force by pulling on the string from the centre,
what has happened to the tangential velocity ?
I have seen a few posts which says that as the centripetal velocity is perpendicular to the tangential a change in this force will not result in an increase in the tangential velocity.
but intuition tells me that as the ball is forced onto a smaller and smaller radius its rotational speed will increase.
If I thought of this as the components acting upon it - Tangential inertia and Centripetal force then as I increase the force the angle of the resultant vector will decrease .
Doesn't this mean it has a greater rotational velocity ? doesn't that infer greater tangential velocity ?
I have a ball on a string which is in uniform circular rotation at Tangential velocity v
Assume friction is not present
I now increase the centripetal force by pulling on the string from the centre,
what has happened to the tangential velocity ?
I have seen a few posts which says that as the centripetal velocity is perpendicular to the tangential a change in this force will not result in an increase in the tangential velocity.
but intuition tells me that as the ball is forced onto a smaller and smaller radius its rotational speed will increase.
If I thought of this as the components acting upon it - Tangential inertia and Centripetal force then as I increase the force the angle of the resultant vector will decrease .
Doesn't this mean it has a greater rotational velocity ? doesn't that infer greater tangential velocity ?