### Free Educational Resources

+
Simple Machines: Screw
2 Tutorials that teach Simple Machines: Screw

# Simple Machines: Screw

##### Rating:
(5)
• (3)
• (0)
• (0)
• (2)
• (0)
Author: Nathan Lampson
##### Description:

This lesson will explain how to calculate the mechanical advantage of a screw.

(more)

### Developing Effective Teams

*No strings attached. This college course is 100% free and is worth 1 semester credit.

28 Sophia partners guarantee credit transfer.

263 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 25 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

A screw is a simple machine where an inclined plane is wrapped around a cylinder.  The mechanical advantage created by a screw is based on the closeness of the threads of a screw.  A mechanical advantage is when an input force is amplified by the use of a tool.

In order to calculate the mechanical advantage of a screw, take the length of the threads divided by the length of the screw.

Example:

If the length of the threads of a screw are 6cm long and the length of a screw is 3cm long, what is the mechanical advantage of the screw?

Length of Screw = 3cm