Recent content by chuxingli

oh, great, thanks. is there a link to the solutions as well?

what about specifically olympiad qualifying questions?

is there a website where a lot of physics problems are stored? just in general, not necesscerily, but preferably from the olympiad qualifying exam?

are those actually olympiad questions? i saw opne at amazon and its called International Physics Olympiad. I'm just looking for the qualiofying exam questions (this is the exam where the top 200 scorers become semi finalists).

Is there a place i could find the qualifying exam questions from the past years for practice?

Integral, obviously, there is no outside fore so there is only one way the ball could hit the peg...

there are 3 concepts involved: 1. conservation of energy at the point when the ball leaves the smaller circle 2. speed at the point when the ball leaves the smaller circle. 3. freefall. can someone who knows physics work it out for me. the concepts are quite simple. But the algebra i...

plusaf, the peg and ball are considered points

the question: You have a supporting point and a ball connected by a string of length 100cm. There is a peg at a distance d below the supporting point. You release the ball from rest at an instance when the ball is totally horizontal to the point, it swings along an arc. When the string...