Conservation of Momentum in Two Dimensions involving a barge collision

AI Thread Summary
The discussion revolves around a physics problem involving the conservation of momentum in a two-dimensional collision between two barges. The first barge, with a mass of 1.50 X 10^5 kg, is moving downriver at 6.2 m/s, while the second barge, with a mass of 2.78 X 10^5 kg, is moving across the river at 4.3 m/s before the collision. After the impact, the second barge changes direction by 18 degrees and increases its speed to 5.1 m/s. Participants in the thread seek guidance on calculating the speed and direction of the first barge post-collision, emphasizing the need for a clear explanation of the formulas and methods used to arrive at the solution. The conversation highlights the importance of applying the principles of momentum conservation to solve the problem effectively.
physics newb
Messages
44
Reaction score
0
A barge with mass 1.50 X 10^5 kg is proceeding downriver at 6.2 m/s in heavy fog when it collides with a barge heading directly across the river (see the poorly drawn image, in link)http://img.photobucket.com/albums/v638/ravenatic20/untitled4.jpg ...
The second barge has mass 2.78 X 10^5 kg and before the collision is moving at 4.3 m/s. Immediately after impact, the second barge finds its course deflected by 18 degrees in the downriver direction, and its speed increased to 5.1 m/s.

The river current is approximately zero at the time of the accident. What are the speed and direction of motion of the first barge immediately after the collision? What formulas did you use to solve this, and how did you solve it? In other words, explain how you came to your answer.

Any help would be great!
 
Last edited by a moderator:
Physics news on Phys.org
First, this is a physics problem, not a math problem so I'm moving it. Second, I see no indication at all of what you have done or tried on this problem yourself.
 
No, I haven't. That's why I'm here. What do I do?
 
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Thread 'A cylinder connected to a hanged mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top