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1 votes
1 answers
1.6k views

How can one key open multiple locks?

Topic: Machinery ,    Subtopic: Simple Machines

My suite-style apartment has one lock on the front door and individual locks on each bedroom. However, each roommate only has one key that opens both doors. How does this work, having two keys that can open some of the same locks, but also individual different locks? Is it a feature of the lock or t...

asked: UTC 2021-05-07 03:08 PM
image em98 (256)
1 votes
1 answers
1.6k views

Rubegoldberg zipline

Topic: Machinery ,    Subtopic: Simple Machines

Im a 9th grade student in an engineering class building a rube goldberg machine and i need to launch a marble from a ski lift/zipline type kinex machine onto a carboard track to knock over a trail of dominoes but we can't get the marble to launch off the cart accurately or even at all sometimes...

asked: UTC 2021-05-20 02:08 PM
image william19 (10)