𝗪𝗛𝗬 𝗱𝗼 𝘁𝗿𝗮𝗶𝗻 𝗱𝗼𝘀𝗲𝗻'𝘁 𝗵𝗮𝘃𝗲 𝗿𝘂𝗯𝗯𝗲𝗿 𝘄𝗵𝗲𝗲𝗹𝘀 𝗹𝗶𝗸𝗲 𝗰𝗮𝗿𝘀❓
✅There are many factors that affect the kinds of wheels that need to be used for different kinds of vehicles, but the most important one among them is friction.
❗Since trains need to travel at fast speeds constantly with a lot of weight, they require less friction, which is provided by the metal wheels, whereas cars have to tread uneven terrains and all kinds of roads that require a high value of friction, which is provided by rubber tires.
𝗪𝗛𝗬 𝗶𝘀 𝗮 𝗯𝗼𝘅𝗶𝗻𝗴 𝗿𝗶𝗻𝗴 𝗰𝗮𝗹𝗹𝗲𝗱 𝗮 𝗿𝗶𝗻𝗴 𝘄𝗵𝗲𝗻 𝗶𝘁'𝘀 𝗮 𝘀𝗾𝘂𝗮𝗿𝗲❓
✅ The name boxing ‘ring’ is a relic of ancient times when a physical fight between two opponents took place within a roughly drawn circle on the ground. Also, viewers gathered around the two fighters in a roughly circular manner, forming a ‘ring’ of spectators. Although boxing matches are now conducted in square-shaped areas, such spaces are still called ‘rings’.