Question

the distance a spring will stretch varies directly as the force applied to the string spring. a force of 80 lb is needed to stretch a spring 8in what force is required to stretch the spring 24 in

Answer 1

Use a proportion.
80 lb is to 8 in. as x lb is to 24 in.

80/8 = x/24

10/1 = x/24

1 * x = 10 * 24

x = 240

Answer: 240 lb