Force of a fist-punch have G's

[jaywoo]

I need to calculate the force of a punch for a test I'm running. I have the numbers, but it seems that I have to backwards to find my number!.

I have the force of a punch in G's given by a sensor (accelerometer)

I have Ft/s (feet per second) (high speed Camera) will have anyway by thisafternoon.

I have the mass (6lb moving "fist" on a pnumatic cylinder)

I need Ft/lbs of the punch.

Can anyone give me my formula?

Many Many thanks indeed!

 

[mgb_phys]

Ft/lbs doesn't mean anything.
If you mean the force than F = mass 8 acceleration , you have that from the acceleromter. 1g = 9.8m/s^2 or 32ft/s^2.
Energy is force * distance, ft*lbs. Or you could get it from the kinetic energy of the fist.
Impulse is force*time.

 

[Newberrys]

what was the Accelerometer data?

Im looking to get an Accelerometer (40g) and i want to know the spec's i need so that it won't break.

thanks in advance

 

[AndyS]

Hi
go to www.prosporttech.com[/URL] we use Herman Digital Trainers for martial Arts, American Football, Rugby and most other contact sports.

Check it out, it should give you every thing you need.

Andy

 

[pmacias]

I can provide you with the formula to calculate the force of a punch. The formula is F = ma, where F is the force, m is the mass, and a is the acceleration. In this case, your mass is 6 pounds and your acceleration can be calculated using the values from your accelerometer. Once you have the force in pounds, you can convert it to Ft/lbs by multiplying it by the distance traveled by the fist in feet. This distance can be calculated using the speed of the fist in feet per second from your high-speed camera. Therefore, your formula would be F = (6 lbs)(a) * (distance in feet). I hope this helps you in calculating the force of your punch for your test. Best of luck!