Question

W15D2-13 Table Problem Angular Impulse and Angular Momentum Solutions (http://web.mit.edu/8.01t/www/materials/InClass/IC_Sol_W15D2-13.pdf)
I have a question about this problem. If a force is applied to the Center of Mass it will not create any rotational motion therefore there is no rotational kinetic energy, but if the same force is applied to off the Center than it will have both linear kinetic energy and rotational kinetic energy. I cannot wrap this concept in my head, because same force is applied yet one has more energy

Answer 1

Do not think in terms of energy in the first place. Think in terms of momentum and angular momentum.
They are more reliable concepts than energy.

Once this is done, you will be able to compare the amounts of translational vs rotational KE.

Answer 2

When I think about the momentum and angular momentum. Should I think them separately? Because int terms of momentum, one only create linear momentum, and the other case creates linear momentum "and" angular momentum.

Answer 3

I cannot open your link. But from what I understand of your question, I think I have already given the answer in this post :
http://openstudy.com/study#/updates/52618ba3e4b0c23cd54ad5f2

Answer 4

center of mass and its motion (Sections 7.5 and 7.6). 8.1 ... kinetic energy of such an object so that we don't have to calculate this sum over and ... ticle and the rotation axis stays the same if the object is rigid and doesn't ... When a problem requires you to find a rotational inertia, there are four ..... which the force is applied).

Answer 5

Here is Dr.Walter Lewin just watch him you will fully understand it.
http://www.youtube.com/watch?v=0DR8emfSsF0