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 the water! Suppose that the bungee cord behaves like a spring with spring constant k = 110 N/m. The bridge is h = 80 m high and the jumper's mass is m = 60 kg. Use g = 10 m/s2.
(a) What is the maximum allowed length L of the unstretched bungee cord (in m) to keep the jumper alive? (Assume that the spring constant doesn't depend on L).
(b) Before jumping, our jumper verified the spring constant of the cord. She lowered herself very slowly from the bridge to the full extent of the cord and when she is at rest she measured the distance to the water surface. What was the measured distance (in m)?
qwef
can somebody tell the answer plzz!
i got this one anyone got the moon and double star system????
Can you please give the answers to this one??
Double star system answer - 9.859*10^17 seconds; keep on getting bungee jump wrong; I might be using the wrong equation. setting the equations to: 1/2*k*x^2=m*g*h; k = 2*m*g*h/x^2
@frank it is wrong could you tell the steps
A planet has a single moon that is solely influenced by the gravitational interaction between the two bodies. We will assume that the moon is moving in a circular orbit around the planet and that the moon travels with a constant speed in that orbit. The mass of the planet is mp = 2.20 × 1025 kg. The mass of the moon is mm = 8.61 × 1022 kg. The radius of the orbit is R = 6.58 × 108 m.
What is the period of the moon's orbit around the planet in earth days (1 earth day = 24 hours)