1 posts tagged ‘university of pittsburgh’
Physics puzzler: stationary ball suddenly moves without force
Boing Boing,
A ball is sitting motionless on a dome. According to standard physics, it should stay put indefinitely, at least until the ball or the dome is perturbed. Suddenly, it begins sliding down the dome without any external force. How is that possible? — Read the rest The post Physics puzzler: stationary ball suddenly moves without force appeared first on Boing Boing.