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Thursday, February 21, 2013
Sunday, February 10, 2013
Impact Force of a Paintball
Alternate title: Y CAN'T MCBERS MATH?
Alternate title: The (Un)Scientific Method
http://www.mcarterbrown.com/forums/dead-zone/125903-physics-paintball-sort.html
Here's my back-of-napkin calculation.
1/2 mv^2 = F * d
Mass = 0.0032kg
Velocity = 88 m/s
d = 0.008636 (half the diameter of a paintball; will explain later)
Average force = 1434 Newtons. This is obviously an average force.
Assuming average head is about 8 lbs (3.63kg):
F = m * a
1434 = 3.63 * a
a = 395 m/s^2
g = 9.8 m/s^2
a = 40.3g
Alone, not enough to meet the 70g threshold for concussion that's thrown around, but high enough to consider, especially given how many variables might be involved.
More on this later.
Alternate title: The (Un)Scientific Method
http://www.mcarterbrown.com/forums/dead-zone/125903-physics-paintball-sort.html
Here's my back-of-napkin calculation.
1/2 mv^2 = F * d
Mass = 0.0032kg
Velocity = 88 m/s
d = 0.008636 (half the diameter of a paintball; will explain later)
Average force = 1434 Newtons. This is obviously an average force.
Assuming average head is about 8 lbs (3.63kg):
F = m * a
1434 = 3.63 * a
a = 395 m/s^2
g = 9.8 m/s^2
a = 40.3g
Alone, not enough to meet the 70g threshold for concussion that's thrown around, but high enough to consider, especially given how many variables might be involved.
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