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An acrobat is hanging by his feet from a trapeze, while supporting with his hands a second acrobat who hangs below him. Draw separate free-body diagrams for the two acrobats.

see solution.

Physics 101 Mechanics

Chapter 4

Newton's Laws of Motion

Physics Basics

Motion Along a Straight Line

Motion in 2d or 3d

University of Michigan - Ann Arbor

Simon Fraser University

University of Sheffield

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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.

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So you have a scenario here where an acrobat is hanging from a trapeze. Those forced upwards and, uh, that act about is supporting another Ichabod just below them. And so let's represent the thie acrobats is point masses, though in reality, you won't get very, very accurate free body diagrams because your limbs on DH, you're different body parts exert have separate. Few body diagrams preach, but it's Annette's sufficient to consider this. Uh, consider this appointment situation so anywhere, the top acrobat, she'll have a free body diagram watching like this first about, uh, w serve you are the weight of the upper acrobats will be acting downwards. Obviously, force of gravity upwards is forced from the trapeze. Um, and then and then also acting downwards is a force of his f you. So this is the force that upper top acrobat exerts on the bottom. Okay, Sorry. So the bottom acrobats we'll have of the sea. Wait. W use of El rate of lower acrobats and acting rob exactly. Opposite to that horse is f sub l. So this is equal and opposite taps of you. So this is the force that lower automatic dramatic sits in the top, OK? And so Newton stirred law. You have that? The force of the top acrobatics. It's in the bottom. You calls force of the bottom that compactor exerts on top. So third, while parents of forces

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