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Does anyone know how to do this?​
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4 votes
Does anyone know how to do this?​

Does anyone know how to do this?​-example-1
User Balexander
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1 Answer

5 votes

Step-by-step explanation:

By Hooke's Law,

F=kx

The only force acting here is weight, and x is the extension of the string (you need to convert this to mm) so

mg=kx

(0.15)(9.81)=k ((420-300)x10^-3)

Then just solve this equation.

User Agustinus
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