Recent content by jeremy222

  1. J

    Calculating Impulse on a Ball: Mass, Radius & Speed

    Homework Statement Lets say I have a ball rolling on a flat frictionless surface. I give it an impulse to set it into rolling without slipping at a speed u. The mass of the ball is m and the radius is a. How large is the impulse and where is it applied Homework Equations I guess linear...
  2. J

    Why Is There a Reaction Force in the Upper Pulley but Not in System 1?

    But how does the lower pulley effect everything else? I did a free body for the lower one but i don't know how that would concern the upper pulley
  3. J

    Why Is There a Reaction Force in the Upper Pulley but Not in System 1?

    Homework Statement m(1) is 20kg m(2) is 30kg gravity use 10 U static is .6 u kinetic is .4 Homework Equations Basically my professor gave the answer to the question in the link along with the picture. The only problem is that i am not sure he did case three right and i am after...
  4. J

    Scaling Augmented Matrices: Is My Thinking Correct?

    An augmented matrix scaled by a number also means the solutions set is scaled by that same number. I believe this is true due to it basically being the same as elementary row operations preformed on each row. Unless it is a zero scalar in which case you lose all conditions. Is my method of...
Back
Top