The distance a spring will stretch varies directly with how much weight is attached to the spring. If a spring stretches 11 inches with 75 pounds attached, how far will it stretch with 65 pounds attached? Round to the nearest tenth of an inch.

Question

anonymous · Answer

a spring equation is:

F = kx 

F = mass * gravity accelaration
where x = stretch and K = linear elastic coefficient which is the same for each spring.

So you must calculate the K to a  x=11 inches (stretch) and to a 75 pounds (dont forget to convert it to a force by multiplying by the gravity acceleration = 9.81 m/s^2)

after you get the K you can successfuly calculate the x for a 65 pounds mass with the same equation

ulises · Answer

the answers are 9.5in , 10.9 , 11.2in , and 12.7in which one is it

anonymous · Answer

I wont give you the answer. You have to get there by yourself. This site is made for us to learn and not to copy paste values

anonymous · Answer

lets calculate the K for the first case:

F= kx
75*32.17 = k * 11

k = 219.34


Now for the second case:

F = kx
65*32.17 = 219.34*x

x = 9.5

ulises · Answer

how did u get 9.5 thats the part i dont get

anonymous · Answer

read my first reply.

K is the same on every spring

ulises · Answer

ohh i see it now thx for the help