Springs in series/parallel, please help!!!

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forgotten_one
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3 springs are connected in series. A force of 1.5g N is applied. Each spring has a spring constant of 200Nm^-1. What is the extension of each spring?

Really confused with these types of questions on spring. I am stuck. Would really appreciate if anybody could help me.
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forgotten_one
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So I just did x=1.5g/200 which gives me 0.0736m. Is this the correct answer because I am just guessing?
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Joinedup
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(Original post by forgotten_one)
So I just did x=1.5g/200 which gives me 0.0736m. Is this the correct answer because I am just guessing?
Yeah springs in series all have the same tension
springs in parallel share the tension with each other

so each of the springs in series will extend by the same amount it would on it's own if it had 1.5gN tension on it... which is what the question asks for.

BUT also note the combined extension of all three together will be 3 times as great as a single spring - it's equivalent to one spring with 1/3rd the spring constant of a single spring and 3 times the unstretched length of a single spring.
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Ladkus
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forgotten_one
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(Original post by Joinedup)
Yeah springs in series all have the same tension
springs in parallel share the tension with each other

so each of the springs in series will extend by the same amount it would on it's own if it had 1.5gN tension on it... which is what the question asks for.

BUT also note the combined extension of all three together will be 3 times as great as a single spring - it's equivalent to one spring with 1/3rd the spring constant of a single spring and 3 times the unstretched length of a single spring.
Thank you so much for your reply!!! I think I get it now
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forgotten_one
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(Original post by Ladkus)
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This was very useful Thank you so much, it makes so much sense now
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