Recent content by Nicolas Gallardo

Firstly I would like to apologize for my lack of information given. In the other hand I did not input ''w=2ω'' anywhere, may be it was a typo mistake. I just used that the rotational energy on a solid is Krot=(1/2)Iω2. Anyway thanks to you, I could find the answer. So I appreaciate your help...

mgsen(theta)=0 is beacuse of how I used my coordinates system. There is no acceleration in the i-coordinate. I did it this way, so I only had to descompose the weight.

That is the correct rate beacuse the CoM of disk 1 is at 2R from the CoM of disk 2, and disk1 is rotating with respect to the CoM of disk 2?

Yes initially the CoM are separated by 2R. But when they are about to separate the distance beween the origin(by origin I mean the reference to apply conservation of energy) and the CoM of Disk 1 is 2RcosΘ (trigonometry) may be I did my calculations wrong, but I did this just to apply...

Homework Statement A mobile disk of radius R and mass M is moving above another immobile vertical disk of the same radius. Initially the mobile disk is at rest at the highest point above the immobile disk and then it starts rolling without slipping. Assuming the mobile disk never slips, find...

If we denote V' to the velocity of the particle related to the CoM frame, V to the velocity of the particle related to the cartesian axe and VCoM to the velocity of the CoM, then the velocity of the particle would be: V'= Vcartesian - VCoM Am I correct?

Relative to the CoM? But how would that change in the equation?

That is (1/2)(mv^2)⇒ (1/2)(1(5^2)). One of the velocities is 5 m/s. The other 3 velocities are: 3 m/s, 3 m/s, 2m/s

Homework Statement Four particles of mass 1 Kg each, are moving on a plane with the velocities given in the figure. Homework EquationsThe Attempt at a Solution First I calculated the position of the CoM: Xcm=7/4(i + j) Then I calculated the velocity of the CoM: Vcm= ½i + ¼j For the internal...

Yes! You are right! How could I be so dumb. I am sorry I am new with rigids body dinamics. Thank you for your help.

But how would the moment of inertia change? Both of the disks are rotating with respect to the center axis...

Homework Statement The object of the figure below has 2 disks attached on both sides through and axel of negligible mass. Both disks of mass M. I need to find the linear acceleration of this object knowing there exists a tension T on the cord. Homework Equations :[/B] T=αI The Attempt at a...