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physics question on ball spin

Question:

In order to put backspin on a ball, you must strike the ball above its equator ("equator" being relative to the swing path at impact). The fact that all golf clubs have positive loft makes this almost impossible if you strike the ball on the face of the club.  (You might be able to put slight topspin on a ball by using an ascending blow with a putter or a hooded low-lofted driver.)  However, if you skull or top a ball the resulting shot can have topspin. If you are trying to hit a running shot you’d like it to have as little backspin as possible.  The "Texas turndown" type of shot doesn’t really put topspin on the ball but it reduces backspin considerably.  You can also intentionally blade a shot if you want it to run out farther than normal.   -joseph – Hide quoted text — Show quoted text – a friend of my and I had a discussion about the back spin of a ball. as much as I’m aware, I thought the ball should have a certain rpm backspin to get the furthest flying distance. I also hear that you should hit the ball (with your driver) on your upswing. Here is the question: When I hit my ball on the upswing, shouldn’t it then produce a forward spin (topspin), is there ever a point where I want my ball to have topspin instead of backspin? Thank you Cyborg

Response:

a friend of my and I had a discussion about the back spin of a ball. as much as I’m aware, I thought the ball should have a certain rpm backspin to get the furthest flying distance. I also hear that you should hit the ball (with your driver) on your upswing. Here is the question: When I hit my ball on the upswing, shouldn’t it then produce a forward spin (topspin), is there ever a point where I want my ball to have topspin instead of backspin? Thank you Cyborg

Response:

When I hit my ball on the upswing, shouldn’t it then produce a forward spin (topspin), is there ever a point where I want my ball to have topspin instead of backspin? Thank you Cyborg

As far as the ball in concerned, it’s still being hit with a club face that, for lack of a better description, is still "open in the upward direction" because of the loft of the club, so it’ll get back spin. It’s lust like if you hit struck the ball with an open to the right face, so it’d get side spin. – Hide quoted text — Show quoted text –

Response:

a friend of my and I had a discussion about the back spin of a ball. as much as I’m aware, I thought the ball should have a certain rpm backspin to get the furthest flying distance. I also hear that you should hit the ball (with your driver) on your upswing. Here is the question: When I hit my ball on the upswing, shouldn’t it then produce a forward spin (topspin), is there ever a point where I want my ball to have topspin instead of backspin? Thank you Cyborg

Only on putts.

Response:

No, even putts have backspin (but it is very little) unless you strike the ball above its equator. Only on putts.

– Dan Driscoll Member USGA, NCGA RSG FAQ: http://ttsoft.com/thor/rsggolf.html RSG Roll Call http://u1.netgate.net/~kirby34/rsg/driscolld.htm

Response:

a friend of my and I had a discussion about the back spin of a ball. as much as I’m aware, I thought the ball should have a certain rpm backspin to get the furthest flying distance.

for furthest distance you want zero spin and a launch angle of 42 degs. However, that is a silly solution… yes for every normal launch condition – velocity/angle there is an optimum spin to maximise carry I also hear that you should hit the ball (with your driver) on your upswing. Here is the question: When I hit my ball on the upswing, shouldn’t it then produce a forward spin (topspin), is there ever a point where I want my ball to have topspin instead of backspin?

no assuming you dont top the thing, it will always produce back spin and unless you want to specialise in trick shots you never ever want top spin! Before you buy.

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