chazgurl4life
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A bungee jumper with mass 66.0 kg jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 35.5 s. He finally comes to rest 28.0 m below the level of the bridge.
Calculate the spring stiffness constant of the bungee cord.
N/m
For this part i figured i could solve for period (T) which would be the 35.5 sec /8 whihc is 4.4375 s
and then i used T=2pi* (m/k)^1/2
and with that i thought i could solve for K
that comes out to be ...k=(4pi^2*mass) / T^2
so k=132.3 N/m
Calculate the unstretched length of the bungee cord
I could either use T= 2*PI*(L/G)^1/2
L=(4.4375 s^2 * 9.8)/4*pi^2-4.88 m ...but that's wrong
OR I COULD USE ---f= 1/2*pi *(g/l)^1/2 ...
L=(2.46*g)/f^2=477.69 m
and just solve for L ...rite?
but when i plug everything in i keep getting it wrong
Calculate the spring stiffness constant of the bungee cord.
N/m
For this part i figured i could solve for period (T) which would be the 35.5 sec /8 whihc is 4.4375 s
and then i used T=2pi* (m/k)^1/2
and with that i thought i could solve for K
that comes out to be ...k=(4pi^2*mass) / T^2
so k=132.3 N/m
Calculate the unstretched length of the bungee cord
I could either use T= 2*PI*(L/G)^1/2
L=(4.4375 s^2 * 9.8)/4*pi^2-4.88 m ...but that's wrong
OR I COULD USE ---f= 1/2*pi *(g/l)^1/2 ...
L=(2.46*g)/f^2=477.69 m
and just solve for L ...rite?
but when i plug everything in i keep getting it wrong