此装置可以模拟大炮发射炮弹的情形。经过演示不但可以观察到“炮弹”的抛体运动曲线,而且还可以观察到发“炮”后“炮身”的反冲运动。实验安全可靠,生动逼真,效果明显,深受同学欢迎,被誉为“模拟大炮”。一、用品:稀硫酸、硫酸铜溶液、锌粒、硬质小塑料瓶(装酸奶用过的)、橡胶塞、力学小车、细线、火柴等。 This device can simulate artillery fired shells. After the demonstration, not only can the “cannonball” projectile motion curve be observed, but also the recoil motion of the “cannonball” and the “shell” can be observed. The experiment was safe, reliable, lively and vivid, and the effect was obvious. It was welcomed by the classmates and was hailed as “simulated cannon.” First, supplies: dilute sulfuric acid, copper sulfate solution, zinc particles, hard small plastic bottles (used yogurt installed), rubber stoppers, mechanical cars, thin lines, matches and so on.