What is the length of the stretched version of the spring, if a 40 g mass hangs vertically on the spring, with a spring constant of 30 N/m? Assume that when the spring is in the relaxed state it has a length of 20 cm. Draw a picture
I don't understand how to do this question.
I don't understand how to do this question.
1 Answer
Jan 11, 2018
21 cm
Explanation:
Hooke's Law tells us that the extension of the spring is directly proportional to the stretching force:
x is the extension
F is the force
We need to convert 40 g to kg by dividing by 1000
The force is given by:
This is the extension so the new length will be:
I'll leave you to draw the picture.