Recent content by dotrantrung

https://www.physicsforums.com/showthread.php?t=501566 This is the similar problem, could you tell me why in that problem, 2 mass have equal velocity when the angle is 45 degree?

Oh, I forgot, that is a rigid string. moreover, my teacher just post the answer today, and he just ask how to derive to this equation: v1=v2= sqrt[gL (1-1/(2sqrt{3}))]

it is initially at rest. I don't really know why v1 and v2 is equal, but my prof said that v1 and v2 are equal. so it just 1 velocity for both of them.

Homework Statement Hi everyone, my teacher gave this problem as an extra credit for last exam, which I just did very bad. The figure is attached to the post. There are 2 objects, which have the same mass (m). 2 objects are connected to each other by a string length (L), which is massless. At...