|
|||
Because when you move the backboard you move the rim.
|
|
|||
Quote:
The backboard doesn't have to move "significantly", just any movement will move the rim. |
|
|||
So actually moving the backboard would be required to call this BI? Because just touching the backboard isn't going to affect the shot any more than just touching the net will.
__________________
"It is not enough to do your best; you must know what to do, and then do your best." - W. Edwards Deming |
|
|||
Quote:
I'll go back to the original, SIMPLE point - if the rim and net are included in the BI rule, the backboard should be included also. Touching the backboard is more likely to alter the ball than touching the net. |
|
|||
Quote:
Reaching way back to my HS physics class (and the more scientifically inclined will correct me if I'm wrong here), I recall there are some other complicating issues involved too. There's the matter of the mass of the backboard, especially a glass backboard. That much matter is going to strongly resist any impetus applied to it. A material suitably stiff to make a good backboard will lack the elasticity required to be a good carrier of transverse wave energy. A backboard's size relative to the size of the rim mount site means that any wave that is set up will dissipate somewhat before reaching the rim mount site. (Iirc, wave energy dissipates at a rate equal to the square of the distance from the center of the wave) Padding along the edge of the backboard will have a dampening effect on wave energy that might otherwise be reflected from the edge of the backboard material back into the backboard. Need I point out that the most padded surface of all is the bottom, just below the rim? For a glass backboard in particular, I would expect the manufacturer to place a buffer material between the rim and the glass, and probably line the holes between the shafts of the bolts and the glass. This material would exist to resist energy applied to the rim being transferred to the glass. Otherwise you risk cracking the glass every time a ball hits the rim. That energy transfer resistance would likely operate in both directions. On glass backboards the rim must also be attached to the backboard frame so that it cannot come crashing down if the glass breaks. Wave energy transferred via this additional attachment point is almost certain to be out of phase to some degree with waves transferred from the glass itself, further reducing the total wave energy transferred to the ring. There are obviously a lot of variables based on how a backboard is constructed and braced and how the rim is attached. And I am not saying that it's impossible to shake the rim by hitting the backboard, obviously it is possible. But the physics involved means a player must apply a significantly greater force to the backboard to achieve the same movement caused by simply hitting the rim. Are you certain you want to treat touching the backboard the same as touching the rim?
__________________
"It is not enough to do your best; you must know what to do, and then do your best." - W. Edwards Deming Last edited by Back In The Saddle; Mon Nov 23, 2009 at 07:08pm. |
|
|||
Oh, and as long as we're going to change the BI rule, let's remove the restriction against touching the net so long as the touching does not move the rim.
__________________
"It is not enough to do your best; you must know what to do, and then do your best." - W. Edwards Deming |
|
|||
Quote:
That ought to send him into a spin for a while... Which way did he go? Which way did he go? Seriously...my thoughts exactly....well, not exactly but close enough.
__________________
Owner/Developer of RefTown.com Commissioner, Portland Basketball Officials Association |
|
|||
I'm afraid he might have left to Google impetus and transverse wave and succumbed to Search Overload.
__________________
"It is not enough to do your best; you must know what to do, and then do your best." - W. Edwards Deming |
|
|||
It Was A Much Simplier Time ...
Let's just go back to the 1891-92 NFHS (Naismith Federation of High Schools) rules:
Rule 8. A goal shall be made when the ball is thrown or batted from the grounds into the basket and stays there, providing those defending the goal do not touch or disturb the goal. If the ball rests on the edges, and the opponent moves the basket, it shall count as a goal.
__________________
"For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life." (John 3:16) “I was in prison and you came to visit me.” (Matthew 25:36) |
|
|||
Weird, But It Could Happen ...
Or a throwin.
__________________
"For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life." (John 3:16) “I was in prison and you came to visit me.” (Matthew 25:36) |
|
|||
© ???
Did you get the author's permission?
__________________
"For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life." (John 3:16) “I was in prison and you came to visit me.” (Matthew 25:36) |
|
||||
Quote:
While "any movement" would move the rim, it takes significant movement to affect the shot. The problem as I've seen it presented is the backboard getting hit so hard it shakes the rim. That takes a hell of a hit, IMO. This virtually always happens before the ball is in the cylinder, so unless the backboard is going to be off limits during any try no matter where the ball is, the proposals offered will do nothing to solve the alleged problem that actually exists.
__________________
Sprinkles are for winners. |
|
|||
Ah, but..
Touching the net while the ball is on the rim is BI. We are not required to judge whether it affected the shot. Just touching it is enough.
__________________
Gwinnett Umpires Association Multicounty Softball Association Multicounty Basketball Officials Association |
Bookmarks |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Goal tending or nothing ? | mick | Basketball | 1 | Sun May 24, 2009 08:52am |
Goal Tending | scotties7125 | Basketball | 19 | Sun Jan 27, 2008 03:34pm |
goal tending | ohad_d | Basketball | 0 | Sat Jan 04, 2003 04:19pm |
goal tending | John Schaefferkoetter | Basketball | 4 | Thu Dec 19, 2002 11:45am |