Simple Physics: Blade weight
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Topic: Simple Physics: Blade weight
Posted By: Rollko
Subject: Simple Physics: Blade weight
Date Posted: 10/09/2020 at 8:30am
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Hi all, Given simple physics rules, we know that a moving object with a certain weight will deliver more momentum than a lighter object (both moving with the same speed). Imagine two scenarios: the first one with a heavy blade and light rubbers, and the second one with a lighter blade and heavier rubbers. Assuming the weight of these two set-ups is the same, and the centre mass of gravity is in the same position, which one will be a more favourable option for offensive looping game? Would a lighter blade be a less favourable option, despite the overall weight being the same? In other more simple words, for a BH short pips player, will having heavier short pips on BH help with the momentum and power of the FH, or will that be pretty much fixed with the weight of the blade providing the core of the power?
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Replies:
Posted By: chroot
Date Posted: 10/09/2020 at 8:44am
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The same swing speed & contact point, heavier & harder blade will generate more energy on the ball. In terms of the rubber, it's not simple like that. The hardness of the sponge, the tackiness of the surface and the way you contact the incoming ball, etc will all impact the quality of your shot. ------------- BTY Viscaria 90g DHS Hurricane 3 NEO, 39/2.1 BTY Tenergy 05 1.9 http://mytabletennis.net/forum/forum_posts.asp?TID=62263" rel="nofollow - My Feedbacks |
Posted By: fmarek
Date Posted: 10/09/2020 at 10:04am
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In simple words - SP and LP should have been banned from the game long ago. But to your question - go with the same setup which you train with your coach every week. Yes I am rolling :) Jus cannot help the moment I see SP/LP or BTY dick*nicks. ------------- 729 Green Goblin 5, FH: 729 Battle II National H39, BH: Palio HK1997 Gold. DHS Long 5, FH: 729 Battle II Gold H40, BH: Nittaku C1 |
Posted By: cole_ely
Date Posted: 10/09/2020 at 10:15am
We had a long thread about weight and speed a few years ago. One poster presented math saying the weight of the blade had a very minor impact on the speed. As to the weight being on the outside vs inside, I would think no impact. ------------- Wavestone St with Illumina 1.9r, defender1.7b Please let me know if I can be of assistance. |
Rollko wrote:Posted By: zeio
Date Posted: 10/09/2020 at 2:36pm
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Interesting thought experiment. From the standpoint of modal analysis, despite both cases having otherwise identical center of gravity, the mass of Case 1 is distributed closer to the blade head(more mass inside the blade) than that of Case 2. Case 1 should therefore experience less flex at the neck where the blade head and handle meet, which should result in less energy loss for bending modes. OTOH, the harder rubbers should make up some loss ground in Case 2 for membrane modes, but since the rubbers themselves would cause a substantial downward shift across all modes for both Case 1 and 2, that will likely cancel out the boost. Theoretically speaking, Case 1 should be more balanced between loop-driving and speed-driving. Case 2 should be more suited for loop-driving. ------------- Viscaria FL - 91g + Neo H3 2.15 Blk - 44.5g(55.3g uncut bare) + Hexer HD 2.1 Red - 49.3g(68.5g 〃 〃) = 184.8g |
Posted By: cole_ely
Date Posted: 10/09/2020 at 2:40pm
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before we go on, should we verify that the OP isn't Sjan? ------------- Wavestone St with Illumina 1.9r, defender1.7b Please let me know if I can be of assistance. |
Posted By: mjamja
Date Posted: 10/09/2020 at 2:53pm
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Right. Simple physics just like Simple Middle East Peace Agreement Simple Bipartisan Legislation Simple Determination of best rubber for left handed side-spin looping of underspin. Mark - A simpleton who knows nothing is ever really that simple.
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Posted By: chroot
Date Posted: 10/09/2020 at 3:43pm
LOL Simple rule to keep each candidate's 2 min of speech time not being interrupted in the debate.  ------------- BTY Viscaria 90g DHS Hurricane 3 NEO, 39/2.1 BTY Tenergy 05 1.9 http://mytabletennis.net/forum/forum_posts.asp?TID=62263" rel="nofollow - My Feedbacks |
Posted By: BH-Man
Date Posted: 10/09/2020 at 4:15pm
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The question was presented in a too over-simplified manner. There are many more things going on with whip mechanics and impact dynamics that contribute to the result. Some of the factors are correctly presented but do not account for all that is happening. ------------- Korea Foreign Table Tennis Club Search for us on Facebook: koreaforeignttc |