Hooke Law the distance d when a spring is streched by a hanging object varies directly as the weight w of the object. If the distance is 61cm when the weight is 2kg. What is the distance when the weight is 7kg

Use the law. The first sentence:



So, inserting a constant:



Use the given values:



Find k.

Then, you'll have where you know the value of k.

You can now find the distance d, by multiplying the weight 7kg by the value of k you got before.