Recent content by ericoromero

I am really lost at this point, especially about the distances from the COM. Do I have to find the COM? I will have to look over some lecture notes. I feel stuck. Thank you for all your help.

The mass would be 2(1-cos(theta)) away.? since MB*VB+MA*VA=0, I manipulated that equation to be, 2(VB-VA)=3VA. I made VA negative b/c its moving away from the origin, then I input the masses. And since the mass is attached to the cart, I used VB-VA, instead of only VB

The angle would be equal to the arcsin of 2(length of the rope)/x(the distance of the cart from the common mass centre.

Can I view the masses as one so that instead of having M*V+M*V=L, I have V(M+M)=L? Don't mind the lack of subscripts.

I am still confused. I don't know how to answer that question.

My first thought was: Initially there is only GPE, b/c initial velocity is 0. Once the object is in motion, (the reference point in the y direction, being where theta=0, when hb=2) that there would be two forms of energy, both GPE and KE. I thought GPEi=KE + GPE, but I couldn't figure out how to...

I see. I am also having a bit of trouble with isolating Vb and VA. Would the GPE=KE+L?

I'm sorry about that. I'm not familiar with latex yet. I was confused about initial and final values of L. Does T=mb*Vb2/2 + mbg?

The pictures were accidentally put in reverse order, so the bottom right corner is questions #3 and the top left picture is questions #6

I finished the rest. I just went with my gut and would really appreciate someone reviewing my work. Thank you again.

So far I have this. Am I on the right track?

yeah i meant Ei=Ef, and i meant its isolated about the x-axis. As for the y-axis there is gravity

Homework Statement Consider the situation shown in the picture below. Cart A has a mass of 30kg and rests on a horizontal track with negligible friction. A 20kg mass (B) is suspended from a cable of length 2m from a connection point on cart A. Mass B is raised with the cable kept taught through...

I got it! Momentum is conserved so by using L=Iw and the givens i found w(final). Thank you for your help!

Thank you.