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An airplane has a mass of $3.1 \times 10^{4} \mathrm{kg}$ and takes off under the influence of a constant net force of $3.7 \times 10^{4} \mathrm{N}$ . What is the net force that acts on the plane's $78-\mathrm{kg}$ pilot?

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93$N$

Physics 101 Mechanics

Chapter 4

Forces and Newton’s Laws of Motion

Newton's Laws of Motion

Applying Newton's Laws

Cornell University

Rutgers, The State University of New Jersey

University of Washington

Hope College

Lectures

03:28

Newton's Laws of Motion are three physical laws that, laid the foundation for classical mechanics. They describe the relationship between a body and the forces acting upon it, and its motion in response to those forces. These three laws have been expressed in several ways, over nearly three centuries, and can be summarised as follows: In his 1687 "Philosophiæ Naturalis Principia Mathematica" ("Mathematical Principles of Natural Philosophy"), Isaac Newton set out three laws of motion. The first law defines the force F, the second law defines the mass m, and the third law defines the acceleration a. The first law states that if the net force acting upon a body is zero, its velocity will not change; the second law states that the acceleration of a body is proportional to the net force acting upon it, and the third law states that for every action there is an equal and opposite reaction.

03:43

In physics, dynamics is the branch of physics concerned with the study of forces and their effect on matter, commonly in the context of motion. In everyday usage, "dynamics" usually refers to a set of laws that describe the motion of bodies under the action of a system of forces. The motion of a body is described by its position and its velocity as the time value varies. The science of dynamics can be subdivided into, Dynamics of a rigid body, which deals with the motion of a rigid body in the frame of reference where it is considered to be a rigid body. Dynamics of a continuum, which deals with the motion of a continuous system, in the frame of reference where the system is considered to be a continuum.

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he just in force off 3.7 times sent to the four. Newtons is acting on the airplane, and it makes the airplane takes up at the same kind. There is some force acting on the pilot off that airplane as airplane they lost. What is that Force T. To know that we have to note the following. The pilot is constrained by the seatbelt to accelerate together with the airplane. So what we knew is that acceleration off the pilot is the same as acceleration off the airplane, and I call it a Let me call the mouth off the pilot and crime not to confuse if the matter of the airplane. So all we have to do now it's Catholic acceleration off the airplane by using you to a second law by doing that together, following for more, he goes to the Man Times Next generation, for the acceleration off the airplane is because to the force invited by the mash, and then it is in close to 3.7 time, stand to the form divided by 3.1 time. Stand to the court. That is a simplification off this tent before factor and they got 3.7 divided by 3.1. Now that we know the acceleration, we can complete one of the force that is acting on the pilot because we know now that the relation of the pilot is because the 3.1, because he's tired, tow the airplane by the seat belt so they must generate together. Now how can you Cos the force that is acting on the pilot can do it again by using you to a second law. The forest that is acting on the pilot is because the mass off the pilot and prime time's speculation and these these equals to 78 times 3.7 divided by frequent one. And these give alors approximately 93 new toes on disease before that is acting on the pilot.

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