What is tire rotation?
ANSWER:
Tire rotation is the practice of swapping the front tires of a car with the back tires at regular intervals. The basic idea of tire rotation is to extend the life of the tires by allowing more even treadwear. Some specialty tire manufacturers do not recommend the practice for their customers, but most car owners benefit from a regular tire rotation. Some tire stores even include a basic tire rotation as part of their service contract.
QUESTION 2:
How Propeller rotate converting rotational motion?
ANSWER:
A propeller is a type of fan which transmits power by converting rotational motion into thrust. A pressure difference is produced between the forward and rear surfaces of the airfoil-shaped blade, and air or water is accelerated behind the blade. Propeller dynamics can be modeled by both Bernoulli's principle and Newton's third law. A propeller is often colloquially known as screw both in aviation and maritime.
