Mechanics of machine force analysis with analytical method

Thread starter Pipsqueakalchemist
Start date Apr 19, 2022
Tags

Analysis Analytical Force Machine Mechanics Method

AI Thread Summary

The discussion focuses on understanding the calculation of an angle in a machine force analysis problem, specifically the result of -168.1 degrees. The confusion arises from the use of a comma in the inverse tangent function, which is clarified by the need for both dy and dx components to accurately determine the vector direction. The arctangent function, particularly atan2, is essential for resolving the full circle of slope. This method ensures correct angle determination in two-dimensional force analysis. Understanding these components is crucial for accurate mechanical analysis.

Apr 19, 2022

Pipsqueakalchemist

So I was looking at this example problem in my textbook and I don’t understand how they got -168.1 degrees. The part I’m confused with is the first part of the 2nd picture, there’s a coma in the inverse tan, I don’t know what that means.

Last edited by a moderator: Apr 19, 2022

Engineering news on Phys.org

Apr 19, 2022

Baluncore

Science Advisor

To resolve the full circle of slope or vector direction, the arctangent function needs both the dy and the dx components as parameters.
https://en.wikipedia.org/wiki/Atan2

Thread 'A practical way to vaporize fuel for high MPG?'

Here's a video by “driving 4 answers” who seems to me to be well versed on the details of Internal Combustion engines. The video does cover something that's a bit shrouded in 'conspiracy theory', and he touches on that, but of course for phys.org, I'm only interested in the actual science involved. He analyzes the claim of achieving 100 mpg with a 427 cubic inch V8 1970 Ford Galaxy in 1977. Only the fuel supply system was modified. I was surprised that he feels the claim could have been...

View full post »

Thread 'Turbocharging carbureted petrol 2 stroke engines'

Hi everyone, online I ve seen some images about 2 stroke carbureted turbo (motorcycle derivation engine). Now.. In the past in this forum some members spoke about turbocharging 2 stroke but not in sufficient detail. The intake and the exhaust are open at the same time and there are no valves like a 4 stroke. But if you search online you can find carbureted 2stroke turbo sled or the Am6 turbo. The question is: Is really possible turbocharge a 2 stroke carburated(NOT EFI)petrol engine and...

View full post »

Thread 'Technical Analysis on Titan Sub (Titanic Sub)'

TL;DR Summary: Heard in the news about using sonar to locate the sub Hello : After the sinking of the ship near the Greek shores , carrying of alot of people , there was another accident that include 5 tourists and a submarine visiting the titanic , which went missing Some technical notes captured my attention, that there us few sonar devices are hearing sounds repeated every 30 seconds , but they are not able to locate the source Is it possible that the sound waves are reflecting from...

View full post »