can anyone tell me what's the THRUST formula in FBD
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The force (thrust) is equal to the exit mass flow rate times the exit velocity minus the free stream mass flow rate times the free stream velocity.
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The first chapter of this book dealt with the topic of kinematics — the mathematical description of motion. With the exception of falling bodies and projectiles (which involve some mysterious thing called gravity) the factors affecting this motion were never discussed. It is now time to expand our studies to include the quantities that affect motion — mass and force. The mathematical description of motion that includes these quantities is called dynamics.
Many introductory textbooks often define a force as "a push or a pull". This is a reasonable informal definition to help you conceptualize a force, but it is a terrible operational definition. What is "a push or a pull"? How would you measure such a thing? Most importantly, how does "a push or a pull" relate to the other quantities already defined in this book?
Many introductory textbooks often define a force as "a push or a pull". This is a reasonable informal definition to help you conceptualize a force, but it is a terrible operational definition. What is "a push or a pull"? How would you measure such a thing? Most importantly, how does "a push or a pull" relate to the other quantities already defined in this book?
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