Most of the time, people on the platform Quora ask different questions, and other users provide answers. Recently, someone asked why some tyres on trucks hang in the air. The reason behind this is very simple to grasp. These tyres are known as lift axles or drop axles. Vehicles have tyres on both sides connected by a rod. When this rod rotates, the tyres also rotate. This rod is called an axle and it connects two wheels together. When the driver needs those tyres while driving the truck, they can lower them by pressing a button, allowing them to touch the road like the other tyres. When they are not needed, the driver can lift them up with another button press.
According to engineers, the more axles a truck has, the more weight it will be able to carry. But more axles slow down the speed and easy movement of the truck. Additionally, the presence of more wheels also increases the maintenance cost because tyres are very expensive. Similarly, if all tyres run together, they will wear out together. In such a situation, tyres will need to be replaced together. When the weight of the goods loaded on the truck reduces, the axle is raised so that the tyres do not wear out and last longer.
Hence, these Quora questions often go viral on social media, providing loads of information to the audience. Similarly, a question was asked once by an individual, why do the dials of the clock always move in a clockwise direction that is from left to right? Many people have answered about the clockwise movement of the clock claiming that the world’s first clock, which is known as the sundial, was used to measure the time using the movement of the sun. Since the movement of the Earth in the Northern Hemisphere is also from left to right and the sun also moves in the sky in a clockwise direction, he answered that the dials of the clock also move in a clockwise direction.
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