Recent content by good jelly

  1. good jelly

    Find the work done by a spring using potential energy considerations

    At first I tried using U1 = 1/2kx^2 from -x to zero then U2 from zero to +x but I don't know shall I add U1 and U2 or subtract them?
  2. good jelly

    Relationship between linear velocity and angular velocity

    I find the velocity vector that is perpendicular to the radius which is v*cos(theta). Once I obtained the velocity that is perpendicular to the radius I used the equation : v = wr. But my answer seems to be wrong, the actual answer to this question is v = wr*cos(theta). Why?
Back
Top