How Do I Calculate the Force of a Punch in Ft/lbs?

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SUMMARY

The discussion focuses on calculating the force of a punch in foot-pounds (Ft/lbs) using data from an accelerometer and a high-speed camera. The formula for force is established as F = mass × acceleration, where acceleration is derived from the accelerometer readings (1g = 32 ft/s²). Additionally, energy can be calculated using the formula energy = force × distance. The user also expresses interest in acquiring a 40g accelerometer for further testing.

PREREQUISITES
  • Understanding of Newton's Second Law (F = ma)
  • Familiarity with accelerometer specifications and data interpretation
  • Knowledge of kinetic energy calculations
  • Basic principles of impulse and its relation to force
NEXT STEPS
  • Research how to calculate kinetic energy using mass and velocity
  • Learn about the specifications and selection criteria for accelerometers
  • Explore the relationship between impulse and force in physics
  • Investigate the use of high-speed cameras for motion analysis
USEFUL FOR

This discussion is beneficial for sports scientists, engineers working with motion analysis, martial arts trainers, and anyone interested in quantifying the force of physical impacts.

jaywoo
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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!
 
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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.
 
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
 
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
 
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