1. Tweezers, chopsticks, guillotines 2. The handle and rotating shaft are called levers 3. They are shaped into an S shape, with a small slope and high mechanical efficiency.
When driving two road sections with equal heights, the work done by the car against gravity is equal. The greater the distance S, the smaller the force F required. Since the power of the car is constant, the output force also has a limit. In order to avoid It's overloaded, so slow down the slope and increase the distance to climb hard enough...