Question

What Force would be needed to extend a spring with a spring constant k=7 N/m that extends

0.3m?​

Answer 1

Force = - 2.1 Newton

Explanation:

According to question ,

The value of Spring constant , K = 7 N/m Newton per meter

And the spring is extended up to 0.3 meter

The Force experience on the spring is calculated from the Hook's Law

The principal state that , the force applied on spring to extend or compress the spring to some distance is proportion to that distance.

Let the force be F

So, F = - K X

where K is spring constant and X is its displacement

Negative sign shows displacement of spring once it is stretched

And K is spring constant

So ,Force = ( - ) 7 × 0.3

I.e Force = - 2.1 Newton Answer