physics- please help

posted by .

A 65 kg bungee jumper leaps from a bridge. She is tied to a bungee cord that is 11m long when unstretched, and falls a total of 30m .

Part a) Calculate the spring constant of the bungee cord assuming Hooke's law applies.

part b)Calculate the maximum acceleration she experiences.

i got the answer for part a which is 105.8 but i need help with part b

  • physics- please help -

    b) While falling freely, her acceleration remains g = 9.8 m/s^2 (positive downward). There is another relative maximum acceleration, in the opposite direction, at maximum stretch, X = 19 m. Acceleration then equals
    Fnet/m = (-kX +Mg)/M
    If your k is correct, that would be
    (-105.8*19 +65*9.8)/65 = -21.1 m/s^2

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A 72 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 13 m, and falls a total of 38 m. Calculate the spring stiffness constant "k" of the bungee cord, assuming Hooke's law applies. Calculate …
  2. Physics

    A 66 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 14 m, and falls a total of 34m. 1. Calculate the spring stiffness constant of the bungee cord, assuming Hooke's law applies. 2. Calculate …
  3. Physics

    A 58 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 15 m, and falls a total of 36 m. Calculate the spring stiffness constant k of the bungee cord, assuming Hooke's law applies. Calculate …
  4. physics

    A 56 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 11 m, and falls a total of 38 m. Calculate the spring stiffness constant k of the bungee cord, assuming Hooke's law applies. Calculate …
  5. physics

    A 53 kg bungee jumper jumps from a bridge. She is tied to a bungee cord whose unstretched length is 13 m, and falls a total of 35 m. Calculate the spring stiffness constant k of the bungee cord, assuming Hooke's law applies.
  6. physics ! HELP !

    A 65 kg bungee jumper leaps from a bridge. She is tied to a bungee cord that is 11m long when unstretched, and falls a total of 30m . Part a) Calculate the spring constant of the bungee cord assuming Hooke's law applies. part b)Calculate …
  7. physic

    Bungee Jumping. A bungee jumper jumps from a tall bridge attached to a light elastic cord (bungee cord) of unstretched length L. The cord first straightens and then extends as the jumper falls. This prevents her from hitting the water! …
  8. Physics Classical Mechanics

    A bungee jumper jumps (with no initial speed) from a tall bridge attached to a light elastic cord (bungee cord) of unstretched length L. The cord first straightens and then extends as the jumper falls. This prevents her from hitting …
  9. physics

    a 62.0kg bungee jumper jumps from a bridge. she is tied to a bungee cord whose unstretched length is 12.0 m and falls a total of 31m a) calculate the spring constant k of the bungee cord and b) calculate the maximum acceleration she …
  10. physics

    a 62.0kg bungee jumper jumps from a bridge. she is tied to a bungee cord whose unstretched length is 12.0 m and falls a total of 31m a) calculate the spring constant k of the bungee cord and b) calculate the maximum acceleration she …

More Similar Questions