Recent content by tukms

thank , but how to prove your conclusion :P PS your thought made me excited . I also try to find the solution with you

I myself reckon that the stick would be moved in the composition of two simpler motions as transtational motion and rotational motion , but I don’t know the axis of the rotation I think that if you could solve this problem , the solution would be done in the natural way and I could...

No , I have tried to solve it but the hard occurs when I don’t know the center of rotation of the rod . In fact , I know that this system is isolated and we have 3 laws of conservations for : linear momentum , mechanic energy , angular momentum . But I still don’t resolve it PS I have both...

No , I have tried to solve it but the hard occurs when I don’t know the center of rotation of the rod . In fact , I know that this system is isolated and we have 3 laws of conservations for : linear momentum , mechanic energy , angular momentum . But I still don’t resolve it PS I have both...

I post it in the image

I read this stage but I don’t understand , be generous to analyze it for me Thank you in advance

I have read a section but I don’t know their explanation , so please explain for me Thank you

though I can't post Latex truly , i guess you would know my confusion , please answer me as soon as possible thank you :)

I only try to post Latex but no success :( again I have a confusion of a conclusion in the textbook ( I posted it in the attach file ) Net internal torque equals zero ( similarly to conclusion in the Newton’s third law ) but I myself reckon that torque is defined as ${\rm{r \times F}}$...

I have a confusion of a conclusion in the textbook ( I posted it in the attach file ) Net internal torque equals zero ( similarly to conclusion in the Newton’s third law ) but I myself reckon that torque is defined as $rm{r \times F$ And maybe there occurs the case below ...

I have a confusion of a conclusion in the textbook ( I posted it in the attach file ) Net internal torque equals zero ( similarly to conclusion in the Newton’s third law ) but I myself reckon that torque is defined as ${\rm{r \times F}}$ And maybe there occurs the case below ...