History of Inertia
Inertia is the resistance of any physical object to any change in its state of motion. In other words, it is the tendency of objects to keep moving in a straight line at constant linear velocity.
Newton first published inertia in Philosophiae Naturalis Principia Mathematica (1687) as three laws of motion. Galileo introduced the inertia concept about 1605, before Newton. Newton's Laws of Motion are the branch of physics now termed classical mechanics that begins with the equation F=ma. It concerns the energy transferred by the force F when mass m is given acceleration a. This is often regarded as the beginning of modern physics. But no one knew what produces this equation, a basic natural law.
Newton saw inertia as an action-at-a-distance paradox because he expected that a distant planetary body (visible as a star) was the recipient of the inertial energy transfer. At that time he could not know the energy transfer role of quantum space - the wave medium of the WSM; it was unknown in his time. Ultimately, ``inertia'' in modern classical physics has come to be a name for the same phenomenon described by Newton's First Law of Motion, and the two concepts are now considered to be equivalent. Momentum and angular inertia are other key terms regarding inertia. In common usage the term ``inertia'' may refer to an object's ``amount of resistance to change in velocity'' . . ., or sometimes to its momentum, depending on the context. Angular inertia is an integral over the square of the distance from the center of gravity, so it favors small cars even though the lever arms . . . also increase with scale.
With all of these concepts about inertia, how does it apply to history and my my project. Well, planes in World War II began to use a complex system of hydraulics that helped balance the plane and stabilize larger planes such as bombers and stealth aircraft. These advanced planes include, the Grumman F8F Bearcat, the Soviet Yakovlev Yak-3, the Chance Vought F4U-4 Corsair, and the innovative Lockheed P-38J Lightning. The hydraulic syste used a water inside a ring around the plane that used inertia to counter the effects of G's while in flight. This added maneuverability which was crucial for aerial combat.
This effect can be seen in the Inertia Demonstration. Which uses water with food coloring to demonstrate inertia in action.The Rotational Acceleration Tank demonstrates a centrifuge when used on the Rotational Platform. Observing the shape of the red liquid in the tank, students can better understand rotational motion and its relationship to centripetal force. The water is contained in a glass tank with a rotating base that spins on its y-axis to show the centripetal acceleration at work.
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