Question

Springs are used to measure the mass of objects. The extension of a spring, E centimeters, is

directly proportional to the mass, M kilograms, of the object hanging from the spring. A 4-kg
load stretches a spring by 2.5 cm. If a 6-kg load is hung on the spring, find the extension of the
spring in centimeters.

Answer 1

The extension of the 6-kg load is 3.75 cm

Explanation:

4/2.5 = 6/x

Cross multiply:

4x = 15

15/4 = x

x = 3.75