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.
So we put together for you a list of 10 surprising Chinese inventions you didnât know were Chinese, ranked from the least to the most surprising. Ready to see what was invented in China? Prepare to be amazed! #1 The most fascinating of all the Chinese inventions: the Compass. The first item on our list of ancient Chinese inventions is the compass. Itâs one of the åå¤§åæ sÃ¬ the 4 great Chinese inventions, but people tend to forget about it.