Question

The amount a spring will stretch varies directly with the amount of weight attached to the spring. If a spring stretches

Answer 1

Answer:

1.05 inches

Step-by-step explanation:

As the  stretch varies directly  with the amount of weight it means that a decrease in weight result in a proportional decrease of stretch.

Answer 2

Answer:

The spring will stretch 1.05 inches.

Step-by-step explanation:

The amount a spring will stretch varies directly with the amount of weight attached to the spring.

Let the spring stretches x inches when 40 pound is attached.

we get the following relation;

$\frac{2.1}{80} =\frac{x}{40}$

=> $80x=2.1\times40$

=> $80x=84$

x = 1.05 inches

Hence, the spring will stretch 1.05 inches.