Circular Motion and Newton's Laws

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Homework Help Overview

The problem involves a model airplane in circular motion, analyzing forces acting on it, including tension, weight, and aerodynamic lift. The subject area encompasses circular motion and Newton's laws of motion.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • The original poster attempts to set up scalar equations for the forces acting on the airplane but expresses difficulty in achieving the correct answer. Some participants suggest reviewing the work presented and continuing the discussion in the appropriate section.

Discussion Status

The discussion is ongoing, with some equations provided based on the described forces. There is no explicit consensus on the correct approach, and participants are exploring different interpretations of the problem setup.

Contextual Notes

The original poster has indicated multiple attempts to solve the problem but has not yet reached the expected solution. There is a suggestion for the poster to show their work for better assistance.

rmarkatos
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A model airplane of mass 7.50 with a speed 35m/s flies in a horizontal circle at the end of 60.0m control wire. Aerodynamic lift acts on the plane at an angle of 20 degrees West of North.

In the picture the book has the plane on the right. The weight is acting straight down, the tension is acting at angle of 20 degrees South of East and the aerodynamic lift is acting 20 degrees west of north.

Can someone set up the x and y scalar equations please. The answer is 12.8N. I have set it up 5 different ways and i can't seem to get the right answer.
 
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You should show some work and post it in the homework help section next time. Now if you'll excuse me, I got to jet.

~Ciao
 
Looks like this was moved to homework help, but rmarkatos had already posted there.

May be best to continue in the other thread.
 
Fx -Tcos20 - Fsin20 = mv^2/r
Fy -Tsin20 + Fcos20 - mg = 0 where T is the tension and F is the aerodynamic lift

Those are the equations based on the picture described.
 

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