Il A heavy ball with a weicht of 100 N (m 10.2 kg) is hung. from the ceiling of a lecture hall on a 4.5-m-long rope. The ball. is pulled to one side and released to swing as a pendulum, reach-. ing a speed of 5.5 m/s as it passes throuoh the lowest point.
Inventions. The huochong gun was invented in China during the Ming dynasty. It was also called the tongjiangjun, which meant bronze general. This was an important invention of the time period because the Ming Dynasty was creating weapons to defend their dynasty, and they came across the gun.t was also called the tongjiangjun, which meant bronze general. This was an important invention of the time period because the Ming Dynasty was creating weapons to defend their dynasty, and they came across the gun.
What were some major weapons created During the beginning of gunpowder warfare? The Chinese made an arrow that used gunpowder,the Mongols were some of the first to subject to it in the Song Dynasty.It was known as flying fire,where a gunpowder tube was placed on an arrow and hurled toward the enemy.unpowder was made by the chinese trying to find the potion of life.The Chinese were also the first to use it for warfare(during The Song Dynasty).It affected many wars after,like The Holy Wars,Spanish Wars,and The Civil War,etc.