Would it really be 1000kg given such a short acceration time/distance, if you are using the 9.8m/s as the acceration due to gravity. I haven't done physics for fucking ages...I could be missing something...lol
Both, hit them hard, heavy and all the time. When I'm at full steam back work makes up nearly 50% of my training.
Here is a little secret.
For the purpose of working out which exercise is going to target a particular muscle effectively, efficiently then you would need to place the muscle into a fully stretched position then into a fully contracted posisition for the exercise to be truely beneficial, so for the lat; it attaches to the spine, wraps around the rib cage and inserts under the arm.
So for the lat to fully stretched, your elbow is roughly in front of you face, fully contracted, the elbow should be just past the torso.
Find an exercise that mimics that movement and you've found a very food exercise for that muscle.
Would it really be 1000kg given such a short acceration time/distance, if you are using the 9.8m/s as the acceration due to gravity. I haven't done physics for fucking ages...I could be missing something...lol
OK cool. I was planning on matching pressing and chin-ups in a 1:1 ratio. So say I do 10x2 bench, I will do 20 reps of chin-ups. I'll also add something else which leads me to....
Pullovers!!?
There could be more to it Dicko, I remember reading tests measuring force the engineers were using a "force plate", this was done in the 80's, but what I am trying to convey is that the element of force created be momentum and "impact" in an exercise template will eventually cause problems maybe not straight away.
Actually, I think that example was a 100kg man jumping off a stadium, the force measured 1000kg, lol.
The sports doc I'm going to for my knees always tells me the force going through the knees is roughly 5 x BW when sprinting and 10 x BW jumping.
Shit!! That means it's prob safer squatting
Kicking the rust off the brain cells but you won't use the acceleration of gravity you use the acceleration you put on the bar. Acceleration is change in velocity over time. Velocity starts at zero on the floor.
Velocity = distance / time
Say you pull it 1m high in .1 of a second assuming accelation is even which it won't really be, a = 1/.1 = 10
So f = 100 x 10
= 1000.
But I doubt we can power clean a bar to 1m high in 0.1 of a second.
Geez I'm having a nerd out here.
Also don't quote me on this its been too long since I did this stuff.
Hey bazza you are on the right track but... Since I'm a nerd...
The golden rule for accelerating / de-accelerating you have right - if you want to move a weight over some distance in a shorter amount of time you got to move it faster. To do this, if it's starting from rest, you have to apply proportionally more force to accelerate it to that higher speed. The same goes for de-acceleration (stopping something suddenly, like a car, is a good example - if you run into a lot of bushes, your car stops in 0.5 seconds, if you hit a telephone pole, maybe 0.0005 seconds).
If you're pulling a bar 1m high in .1 of a second the average velocity is 10m/s
Assuming a linear change in velocity that means it goes from 0m/s to 20m/s over 0.1 seconds.
So acceleration would be 200m/s/s
And yeah force would be 200m/s/s x weight = 20,000 Newtons for 100kg (roughly 2000kg of force).
Also, in response to the statement that force is a lot less when running on your toes to the flat of your feet, yes you're right, as you're deaccelerating your mass over a larger distance - as your ankle turning adds distance(and hence takes a slightly longer time). Again, like a crash zone in cars, or the suspension travel on your car. If your ankles were totally rigid the force would be the same (but the pressure on the tip of your foot more... but pressure is another discussion).
Yeah you can all shoot me now.
Also, opinions on lowering the weight fast on bench - good or bad for strength development? Dangerous?
Because I am an even bigger nerd I just want to be a picky bitch and point out there is no such term "deceleration" only positive and negative acceleration (different directions).
Fun over.
Or we can go into torque at the ankle joint whilst running and then use inverse dynamics to calculate internal forces throughout the joints in the foot.
de·cel·er·ate (d-sl-rt)
v. de·cel·er·at·ed, de·cel·er·at·ing, de·cel·er·ates
v.tr.
1. To decrease the velocity of.
2. To slow down the rate of advancement of
To make a pure a healthy and strong body different exercise are given below!!!
1. Push ups
2. Swimming
3. curling
4.Chest training
To make a pure a healthy and strong body different exercise are given below!!!
1. Push ups
2. Swimming
3. curling
4.Chest training
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