The new course is called the Comprehensive Oxford Mathematics and Physics Online School (COMPOS), and is the brainchild of Alexander Lvovsky, Professor of Physics at Oxford. To apply you need to register and submit some work by October 16. If you are not a smart sixth former who loves the hard sciences, but you know someone who is, please let them know about it.
If you are a smart sixth former at a state school in the UK, then you are eligible to take part in a fantastic free course run by Oxford university that will teach you mathematics and physics at a deeper level than the A-level curriculum, preparing you for studying these subjects at university. The last one is maths, not physics, but it allows me to segue into the reason I have posted these puzzles today.
It looks complicated, but there is a two line solution. What will happen sooner: ball 1 flies off the table or ball 2 hits the side of the table? You let go of both balls at the same time. The middle of the string is over the edge of a table. A weightless string connects two identical metal balls.
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