Recent content by cecico

  1. C

    Calculating Angular Speed of a Yo-Yo

    I use MR^2 for I...
  2. C

    Calculating Angular Speed of a Yo-Yo

    Hi~ This is the question i got A yo-yo has radius 8.00cm and mass 0.180kg with small hoop. The yo-yo is released at rest and after yo-yo descended 75.0cm calculator the angular speed of the rotating yo-yo and the speed of its center. I tried to use K=1/2Mv^2+1/2IW^2 but i got weird...
  3. C

    How Do You Calculate the Velocity of a 3.00kg Block at x=2.00m?

    Find velocity... A 3.00Kg block at x=0 is moving to the right at 5.00m/s. A horizontal force acts on the block. Its potential energy funtion is U=(-x^2)-4x+5 find the speed of the block at x=2.00m (surface is smooth) ok the answer is already given by prof. answer is 5.74m/s but I want to...
  4. C

    Block move down the curved hill and hit attached block spring with diagram

    this is it~~~omg thanks for your help really... I was stuck with this prob from yesterday.. T.T now I got it... thanks bro~~
  5. C

    Block move down the curved hill and hit attached block spring with diagram

    I used 1/2mv2=mgh that I got 1.154m...
  6. C

    Block move down the curved hill and hit attached block spring with diagram

    I got 0.08966m...
  7. C

    Block move down the curved hill and hit attached block spring with diagram

    alright for 100gram I got -4.755m/s and for 400gram I got 3.17m/s...it seems wrong..T.T
  8. C

    Block move down the curved hill and hit attached block spring with diagram

    ok...now i really don't get it... what equation do i have use?? momentum equation? Mv+Mv=Mv+Mv but there's two unknown... how do i calculate this? -0-
  9. C

    Block move down the curved hill and hit attached block spring with diagram

    immediately after the collision I got 1.585m/s... is this right?
  10. C

    Block move down the curved hill and hit attached block spring with diagram

    according to my calculation I got 7.925m/s...after this i have no idea...
  11. C

    Block move down the curved hill and hit attached block spring with diagram

    SaladSamurai your right... I have to use Work-Energy theorem and Conservation of Energy and the speed is 2m/s at point A and the surface is smooth...
  12. C

    Block move down the curved hill and hit attached block spring with diagram

    oh~ height is 3.0m...
  13. C

    Block move down the curved hill and hit attached block spring with diagram

    A 100grams block is moving at 2m/s down the curved hill. The block slides along the smooth surface and collides elastically with the 400gram block. The 400gram block is initially at rest and is attached to an ideal spring with spring constant of 500N/m a)Find the maximum distance the spring...
  14. C

    Block move down the curved hill and hit attached block spring

    how to post diagram?
  15. C

    Block move down the curved hill and hit attached block spring

    A 100grams block is moving at 2m/s down the curved hill. The block slides along the smooth surface and collides elastically with the 400gram block. The 400gram block is initially at rest and is attached to an ideal spring with spring constant of 500N/m a)Find the maximum distance the spring...