Electric fan

Classical Mechanics Level 1

Paul has two identical ceiling fans, Fan A and Fan B, in separate but otherwise identical rooms. Fan A is switched on the entire time, while Fan B remains switched off.

After some months of use, which fan's blades will be dustier?

\(\)
Assumptions: Upon sticking to the blade, dust is held by a strong electromagnetic force.

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.