Main post link -> https://brilliant.org/physics-problem/eureka/?group=skqQUh8aEBhb
Dear users and administrators, I would like to refer to the question state above. Apparently the solution to the exact same question in level 3 and level 5 is different. My friend has also received a notification that there are some errors in this problem? Will the challenge masters kindly enlighten on why this is so?