Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.

Door Stop: Home

Keywords

Keywords:

Force

Motion

Surface area

Nets

Mass

Prototype

Resources

Print Sources

Stop That Door! (Physics and Simple Machines)

What is the problem?

I have a heavy classroom door and I’m having a hard time keeping it open. I wonder if it is the door’s weight, the angle of the doorstop, or some other factor that is keeping me from propping my door open.

Everytime I think I have a solution my door creeps shut. I’ve tried wedged door stops made of rubber and wood, yet they aren’t doing the job. My math teacher is challenging me to find a solution to this problem.

What is your hypothesis? What variables will you include in your study?

The Problem

Doorstop in the News

A rare Ming Dynasty vase that had been used as a doorstop in a New York home has sold for $1.3 million at auction.

The blue and white moon flask was auctioned Wednesday at Sotheby's sale of Chinese works of art. Its presale estimate was $600,000 to $900,000.

The piece had been in the same family collection for decades. The auction house said the family decided to sell it after seeing a similar piece in a Sotheby's advertisement.

They had the vase on a wooden stand that was used as a doorstop in their Long Island home.

http://www.dailymail.co.uk/news/article-2203612/Rare-Ming-Dynasty-vase-used-DOORSTOP-sells-1-3million.html

How to Build a Wood Wedge