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keisanHigh-precision calculations for everyday life and work

Calculating Airgun Power

Author: dokenplusExecutions: 231504

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Calculate power (joules) based on the airgun’s muzzle velocity and the weight of the pellet.
Pellet weight (g) × muzzle velocity (m/s)² ÷ 2000 = Power (J)
Weight (g)
g
Initial velocity (m/s)
m/s
J (joule) J
The maximum power limits for air guns (toy guns) are as follows:
0.989 J (for 6mm BBs)
1.7584 J (for 8mm BBs)
Exceeding these limits classifies the weapon as a “quasi-air gun,” which constitutes a violation of the Firearms and Swords Control Law.
Additionally, depending on the region, local ordinances or regulations may specify age restrictions or power limits
(designation as a “hazardous toy”).

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