# Ideal Spring

## Homework Statement

A car is hauling an 88 kg trailer, to which it is connected by a spring. The spring constant is 2350 N/m. The car accelerates with an acceleration of 0.29 m/s^2. By how much does the spring stretch?

Fx -kx

## The Attempt at a Solution

Fx -kx

88(.29) = -2350x

x = -0.01085957

This seems right. I tried -.0109 and .-01086 but no luck with that either. Am I using the wrong formula?

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G01
Homework Helper
Gold Member

## Homework Statement

A car is hauling an 88 kg trailer, to which it is connected by a spring. The spring constant is 2350 N/m. The car accelerates with an acceleration of 0.29 m/s^2. By how much does the spring stretch?

Fx -kx

## The Attempt at a Solution

Fx -kx

88(.29) = -2350x

x = -0.01085957

This seems right. I tried -.0109 and .-01086 but no luck with that either. Am I using the wrong formula?

Your method is correct. Maybe try dropping the negative. (They may be looking for a positive value for how far the spring stretched.)

that worked. thanks.

G01
Homework Helper
Gold Member
Anytime. 