Mechanical System Efficiency (Winch) Lab
In this lab we created a winch. First we timed how long it took to lift 100g 10 cm. Then we found the voltage and current of the circuit. We then proceeded to do calculations on the electrical aspects of the winch and found several different values. Included are the worksheet that we used for that lab and some pictures of the winch and multimeter.
Constraints
The winch needed to lift a weight of 100g with the power source given.
Brainstorming
As far as brainstorming goes, there wasn't much to it in this project. We just built the winch and followed the worksheet.
Documentation and Calulation
All of our Documentations and Calculations are in the worksheet below.
![](http://www.weebly.com/weebly/images/file_icons/rtf.png)
a1_2_5mechanicalsystemefficiency_1_real.docx | |
File Size: | 1140 kb |
File Type: | docx |
Final design
Our final design for the winch is shown in the pictures below. It was a simple design with the motor going into a worm gear that drove a large gear that drove the axle that had the string wound onto it, which lifted the weight.
Reflection
This was a fairly easy project but it was interesting. We learned how to measure current and voltage in a real-life circuit, which was a nice break from the virtual simulations that we had been doing previously. We were also able to incorporate the skills that we learned in our simple machines unit when assembling the winch.