Recent content by gijungkim

Thanks for the tip!

Nevermind I got it. Just made an algebric mistake..

Homework Statement A 6.0-kg object, initially at rest in free space, “explodes” into three segments of equal mass. Two of these segments are observed to be moving with equal speeds of 20 m/s with an angle of 60° between their directions of motion. How much kinetic energy is released in this...

I haven't checked it yet! I will do that now! Thanks

Thank you!

Can I ask you one irrelevant question? Do you know where I can find good Physics Mechanics problem? Since I'm studying by myself, I just like to read the book and solve problems from online and ask questions here if I get stuck. I found good problems from the book I mentioned above, but I'm...

I found this question from internet! I think this question is based on the book "Physics for scientist and engineers" Serway and Jeweet, but I already read the book and couldn't find anything that explains this problem haha

So when do I get cot(theta)?? where does the theta have to be to get an answer cot(theta)??

Ahh physics is killing me hahaha

Nope. I'm studying physics by myself so I can take AP physics on May! I don't have anyone to ask questions beside here and I got this questions from internet!

Can you help me out?

Ok... I tried my best... and got tan(theta)... Ughhhh why is this so hard to me

Ftotal = F*cos(theta) - (mg - F*sin(theta))Uk = 0 Oh nevermind it will be this one right?

I need one more hint! What equation do I have to set the derivative?? F*cos(theta) / (mg - F*sin(theta)) = Uk This one??

You derive the function and make it as a 0 ??