When I do my leg presses, I always take off 6 plates from each side before removing the final 6 plates. Obviously you can get away with more weight imbalance on a heavy leg press machine than on a free bar with 2 brackets.
[quote]forlife wrote:
When I do my leg presses, I always take off 6 plates from each side before removing the final 6 plates. Obviously you can get away with more weight imbalance on a heavy leg press machine than on a free bar with 2 brackets.[/quote]
Come on man. Have some common sense. The leg press is a giant machine, of course it’s not going to tip over. That thing probably weighs upwards of 500 pounds.
My gym has 45lb and 55lb ‘olympic’ bars and 25lb and 15lb pound EZ curl bars. Just for the sake of information.
It’s heavy equipment, but then again I’m pushing 1,080 pounds on it. I’ve got more weight on one side than the machine weighs.
How come when I wear my babyblue t-shirt when I work out the sweat stain on my chest is heart shaped but not in any other shirt?
And what ever happened to the band heart? Do they still tour?
And when Cory Hart sang about Sunglasses at Night was he saying that he was too cool for school or was it a cocaine reference?
And if that was the case why didn’t Penelope Cruz wear them more often in the move Blow?
And how come when I set the cruise control in my Tahoe it reads about 5mph less than the speed on my GPS?
This, is where my mind goes in between sets.
[quote]tom8658 wrote:
chimera182 wrote:
kylec72 wrote:
Here’s a stupid one…
How much weight can a standard 45lb bar withstand on one side with the other side being empty before it tips over? This is a question more related to physics than bb, but I’m curious, nonetheless. I believe the most I’ve ever had on one side, while the other side was empty, was 2 45lb plates. Who dares to go higher?
Haha, my buddy and I were actually discussing this, I’ve found it depends more on the rack.
Bingo.
The physics are pretty simple: an uneven load on one side or the bar is going to create a torque about the axis of the nearer J-hook. The bar will tip (that is, rotate about that axis) when that torque is greater than the torque exerted by the mass of the (empty) part of the bar on the other side of the J-hook.
Basically, the closer the support is to the loaded side, the larger load it will take to tip the bar.
This will also depend on the weight of the bar (it will take a larger load to tip a heavier bar), and the elasticity of the bar (more elastic means greater load because some of the energy will be spent deforming the bar).
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I don’t know that the elasticity matters that much. Tipping is a statics problem, energy dissipation from bending doesn’t factor into it. Though it will change the geometry slightly.
It also matters how the weight of the bar is spread out. More weight at the ends of the bar makes it more stable, more of the weight towards the middle makes it less stable.
I have a hole in my wall at home that says a 45 pound bar can tip from 2 plates on one side while sitting on a narrow rack.
[quote]forlife wrote:
It’s heavy equipment, but then again I’m pushing 1,080 pounds on it. I’ve got more weight on one side than the machine weighs.[/quote]
Are you including the weight of the machine in that 1,080 lbs?
[quote]50_Caliber wrote:
Here’s a stupid question:
If emotional states can effect T-levels, then if you lift while pissed off or horny, would that be more anabolic?
[/quote]
Actually that’s not a stupid question in Secher NH, Volantis S, 2007, Rowing they state that “Research in anxiety and stress management shows that athletic performance is maximised when there is an optimal level of emotional arousal”. Basically if a hot chick walks into the gym and you are squatting a nice big fat weight you aren’t really going to want to fail subconsciously and look weak. So you will get a nice adrenaline hit and pump it out.
My question is
Assuming that perfect technique is employed in a full squat, as per Rippetoe’s SS what is the difference between the force acting on the quadriceps between a smith and free squat?
[quote]BONEZ217 wrote:
forlife wrote:
Obviously you can get away with more weight imbalance on a heavy leg press machine than on a free bar with 2 brackets.
The leg press is a giant machine, of course it’s not going to tip over. That thing probably weighs upwards of 500 pounds.
[/quote]
Where’s the disagreement here boys?
well
first stupid quaestion
How can I see a pic of Professor X?
and second stupid quaesion
I am getting bigger,I am a lil bigger than thos photos on my profile ,BUt as A ffb I am afraid to gain too much fat and I have a burining desire to see my abs for teh first time this summer…do u think I should cut??
[quote]forlife wrote:
Lol, point taken. If that’s the case though, is everyone weighing their bar to come up with the weight lifted? All the standard olympic bars I’ve seen have been 45 pounds, and curl bars have been 25 pounds, but sounds like there is some variation.[/quote]
My curl bar is 15…or is it???
What teh name of today’s figure cometitor?
Why is it when im lying in my bed, it feels like my head is tilting to one side. Also it feels that im lying diagonally in my bed, and not straight in the center, no matter how much I move and adjust myself.
Fuck, I’m weird.
[quote]DoubleDuce wrote:
I don’t know that the elasticity matters that much. Tipping is a statics problem, energy dissipation from bending doesn’t factor into it. Though it will change the geometry slightly.
[/quote]
I think you are probably right.
Yes, the torque exerted by the empty part of the bar is going to be the integral (over the length of the longer lever) of the linear density (itself a function of length) multiplied by g and length. I glossed over that. That’s probably what you would have to use for both sides of the bar, since the plates are quite wide when compared to the length of the shorter lever arm.
Unless you hang all of the plates from a chain.
[quote]50_Caliber wrote:
Here’s a stupid question:
If emotional states can effect T-levels, then if you lift while pissed off or horny, would that be more anabolic?
[/quote]
I don’t know. But I’m not sure benching with a raging hard-on while wearing mesh shorts is a great idea. It might put out the wrong signals.
I also get that lying on the bed thing… weird eh?
[quote]sam_sneed wrote:
50_Caliber wrote:
Here’s a stupid question:
If emotional states can effect T-levels, then if you lift while pissed off or horny, would that be more anabolic?
I don’t know. But I’m not sure benching with a raging hard-on while wearing mesh shorts is a great idea. It might put out the wrong signals.[/quote]
Or it might get you a cool nickname like Kickstand, or Hangman
Why do peoples muscles shrink after a cycle of steroids? Is it because their muscles get weaker since they’re not as strong and can’t lift heavy weights? Or is there another reason?
Here’s one; how many of you guys would help a random stranger (spot him) if he was going for a really heavy weight and you were in between sets?
[quote]WesleyD wrote:
Here’s one; how many of you guys would help a random stranger (spot him) if he was going for a really heavy weight and you were in between sets?[/quote]
I did that last night, not going to call it a super heavy weight (110 lb dumbs on incline bench) but dude needed help and I was nearby. No biggie.
I don’t troll for spots, but if I’m in need it’s good to have allies.