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Q & A: Physics Questions? Ask the Van

Physics Questions? Ask the Van

Question of the Day

"When a person jump on a rotating merry go round, its angular velocity increases as he or she moves close to the center.
Finally, it stops due friction.

Can we apply the law of conservation of angular momentum in this case ?

-Jessie (age 15)

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8094 questions have been answered online since 1998 by volunteers from the Department of Physics at the University of Illinois' Physics Van outreach program. We've tried hard to make this the most reliable physics Q&A site on the Web, but no site is perfect, as we explain on this note. Our Baloney feature provides examples of how shaky many other sites are.

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Questions from kids are especially welcome!