What Is a Ballistic Pendulum?

The earliest invented in 1742, a device for measuring the exit energy of a projectile. After shooting at it, measuring the pendulum's moving distance and elevated height, the kinetic energy of the projectile can be measured.

Ballistic pendulum

The earliest invented in 1742, a device for measuring the exit energy of a projectile. After shooting at it, measuring the pendulum's moving distance and elevated height, the kinetic energy of the projectile can be measured.
Chinese name
Ballistic pendulum
Invention time
1742
Object
A pendulum
Function
The kinetic energy of the projectile can be measured
It was first invented in 1742. The device used to measure the exit energy of a projectile is basically a pendulum. After shooting it, the pendulum's moving distance and height can be measured to measure the kinetic energy of the projectile. However, the basic defect is that part of the kinetic energy of the projectile is not completely transferred when it hits the pendulum, and it is consumed by thermal energy and deformation. This method is no longer used in modern times, but the recoil strength is still measured by a similar device. The gun is suspended by a rope. After firing the bullet, the firearm rises backward due to recoil and is restricted by the rope. Measure the recoil and rise of the gun to calculate the recoil.

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