Answer: The unstretched length is (15073.5m you / kg ) meters . Insert your mass

Question

Answer: The unstretched length is (15073.5myou/kg)meters . Insert your mass (myou)

gs he is 'e 80. You are planning to jump off a bridge with a tied to your ankles. The bridge deck is 150 m above the e Because you water, and the cord spring constant is 40 N/m. R bove the gins to stretch, you realize that the unstretched length of as bungee cord, which is adjustable, has to be adjusted based on your inertia. You enjoy thrills and want to reverse your g must fall the length of the unstretched cord before it motion just above the water surface. .. CR

Explanation / Answer

initial potential energy Ei = m*g*(L+y)

final elastic potential energy stored in spring Ef = (1/2)*k*y^2

Ef = Ei

(1/2)*k*y^2 = m*g*(L+y)

(1/2)*40*y^2 = m*10*150

y^2 = 75m

y = sqrt(75m)

L + y = 150

unstretched length L = 150 - y = 150 - sqrt(75m)

L = 150 - 8.66*m

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