Why do lawn mowers use ropes instead of blades

The advantages of using ropes include higher safety, as they are more likely to break when encountering hard objects rather than fly off and cause injury. The cost is relatively low. As a consumable, the production cost and replacement cost of ropes are usually lower than those of metal blades. In addition, the rope can effectively cut grass among irregular gravel and wooden stakes, making it suitable for complex terrains. However, there are also disadvantages to using ropes. For instance, the frictional resistance is relatively high during operation, the machine requires more force to drive, and the service life of ropes is usually shorter than that of blades