Recent content by Toranc3

What do you mean by basics?

Homework Statement A cube is positioned with its vertices at the following points: A=(0,0,0) C=(1,1,0) E=(0,0,1) G=(1,1,1) B=(1,0,0) D=(0,1,0) F=(1,0,1) H=(0,1,1) What is the angle of intersection of the planes formed by the triangles EBC and ECD Homework Equations AB=ABcosθ...

ok so let's say some mass at the top of a projectile explodes. The external force on my system(mass) is the force of gravity. During the explosion though, the force of gravity is small enough to ignore it(compared to the explosion). So momentum is conserved in the x and in the y, starting at the...

Homework Statement Is momentum conserved in a projectile? I was a bit confused with this. Would it be conserved only horizontally? What if it explodes at its max height? Homework Equationsmv=mv2 The Attempt at a Solution

Thanks for the help guys. I was originally trying to do ehilds method but going to the left. I got it now and understand it. I will certainly try your method too Tsny. THanks again!

Well originally I had this: Since the center of mass doesn't change(1.49m) 1.49m= (x2f)m2+(x1f)m1+(xbf)mb/(215kg) x2f=x2 final Since the center of mass doesn't change couldn't this problem be done this way too? When I had this setup I got stuck.

How would this be done if you were to equate the original center of mass to your final values?

Yo thanks for the help. I think I get it now.

Yeah that is correct. It moves .223m towards the initial position of the 75kg person. Ok but from our zero, the center of mass moves then? However the distance from the two people to the center of mass remains the same?

I was thinking the same too!

I know that I am supposed to get x1f and x2f in terms of xbf and solve for xbf but I am not sure how.

Hey I am still stuck. Ok so the center of mass is correct right? Xcm =1.49m How would I set up my final positions? 1.49(215kg) = (x1f)m1 + (x2f)m2 + (xbf)mb

Homework Statement Two people, one of mass 75kg and the other of mass 60kg, sit in a rowboat of mass 80kg. With the boat initially at rest, the two people, who have been sitting at opposite ends of the boat, 3.2m apart from each other, exchange seats. How far will the boat move? and in what...

Hey do you happen to have the answer to this? I would like to check my work. :)

Would it be 4m?