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3 years ago

Someone please explain this :(

Physics

1 answer:

kramer3 years ago

8 0

<h3>Answer:</h3>

10cm, 19cm

Explanation:

Forgive me, I dont have a paper with me now so I cant show you the working BUT here's the rough idea...

Hooke's Law explains that the force needed to extend or compress a spring by some distance x scales linearly with respect to that distance. Take for example the picture above.

As such, the values can be placed in a linear graph, given that it goes not reach its elastic limit. So subtract 20g from 30g and you'll get 10g; subtract 16cm from 14cm makes it 2cm. Following hooke's law makes F=x, 2F=2x so 10g=2cm; 5g=1cm and 1g=0.2cm.

So, to find out how much was extended in the first figure, multiply 20g by 0.2 to get 4cm; the third figure, 30g by 0.2 to get 6cm.

Hence the answer to question one is 14-4 and 16-6 which is 10cm

Now knowing the original length, we can calculate x finding the extention. First, multiply 45g with 0.2 giving 9cm, then adding it to the original 10cm to obtain 19cm.

Hope this is understandable

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Someone please explain this :(​

Someone please explain this :(