- #1
AI Thread Summary
The discussion centers on the direction of moments created by forces F1 and F2 in a specific diagram, with a participant asserting that the moments should point inward and rotate clockwise. However, there is confusion regarding the interpretation of the diagram, as others note that the forces could also be directed outward, depending on the 3D perspective. The right-hand rule is referenced to determine the direction of the moment, indicating that the thumb should point into the paper. Clarification is needed on the 3D drawing conventions used in the book to resolve the discrepancies. Ultimately, understanding the correct application of the right-hand rule and the diagram's orientation is crucial for determining the accurate moment direction.
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...
This problem is two parts. The first is to determine what effects are being provided by each of the elements - 1) the window panes; 2) the asphalt surface. My answer to that is
The second part of the problem is exactly why you get this affect.
And one more spoiler:
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...
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