# Solving Mechanism Geometry Problem - A to B Rotation Degrees

• Kalus
In summary, the conversation is about finding a solution for a problem that is similar to a slider crank. The fixed points are A and B, with the beam labeled 20 rotating 40 degrees from vertical. The person is looking for a general solution and someone suggests using simple construction to find the positions of the rods during the motion. The person then mentions wanting a mathematical solution instead of a graphical one.
Kalus
Ok, I have a problem similar to a slider crank but not quite.

http://imageshack.us/photo/my-images/851/sw1b.png/

Fixed points are A and B, all others are free to pivot. The beam labeled 20 is rotating around, at this snapshot 40 degrees from vertical. How can I find how many degrees back and forth the beam that is fixed at A turns in response? I'd quite like to find a general solution

I really can't figure out the geometry for this one

this can be done with some simple construction..DRAW EVERY THING TO SCALE
Draw an arc showing the motion of the rod fixed to B.

Then divide that arc into maybe 5 pts.Measure the length the 150 rod.

From each of those 5 pts, draw an arc of radius 150(the 150 rod length).This shows the various positions of the 150 rod during the motion of the B rod.

Then from A draw an arc of radius 40(the 40 rod length) to intersect.Join the points of intersection between the various points(between the 150 rod and the 40 rod) with a curve.

I hope this is clear.

Thank you for your reply. It is clear, however I was hoping for a mathmatical solution rather than graphical.

## 1. What is a Solving Mechanism Geometry Problem?

A Solving Mechanism Geometry Problem is a type of mathematical problem that involves finding the rotation degrees between two points, A and B, on a geometric figure. It requires the use of mathematical equations and principles to determine the exact rotation needed to move from point A to point B.

## 2. How do you approach solving a Solving Mechanism Geometry Problem?

The first step in solving a Solving Mechanism Geometry Problem is to clearly define and label the given points and angles on the geometric figure. Then, use mathematical equations and principles, such as the Pythagorean Theorem and trigonometric functions, to determine the unknown rotation degrees. It is important to carefully follow the steps and double-check all calculations to ensure accuracy.

## 3. What are some common mistakes when solving a Solving Mechanism Geometry Problem?

Some common mistakes when solving a Solving Mechanism Geometry Problem include incorrectly labeling points or angles, using the wrong equations or formulas, and making calculation errors. It is important to carefully check all steps and calculations to avoid these mistakes.

## 4. Can a Solving Mechanism Geometry Problem have more than one solution?

Yes, a Solving Mechanism Geometry Problem can have more than one solution. This can occur when there are multiple ways to rotate from point A to point B on the geometric figure. It is important to carefully consider all possibilities and determine which solution is the most accurate and practical for the given problem.

## 5. How is solving a Solving Mechanism Geometry Problem useful in real life?

Solving Mechanism Geometry Problems can be useful in real life in various fields such as engineering, architecture, and robotics. It can help engineers and architects determine the appropriate rotation degrees for moving parts and structures, while in robotics it can be used to program the movement of robots and machines. It is also a valuable skill for problem-solving and critical thinking in general.

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