SOLUTION: The work sheet is titled Direct/Inverse/Joint Variation
A spring extends or compresses in direct proportion to the mass being supported. If spring a extends 13 cm when supporti
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A spring extends or compresses in direct proportion to the mass being supported. If spring a extends 13 cm when supporti
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Question 577167: The work sheet is titled Direct/Inverse/Joint Variation
A spring extends or compresses in direct proportion to the mass being supported. If spring a extends 13 cm when supporting 100g how far will it extend when supporting 20 g?
y=kx
13=k100 k=13/100
y=(13/100)(20)= 13/5
Did I do this right?
Thank you!
The only thing I would have certainly done differently would have been to label your answer with the given units of measurement, i.e. 13/5 cm. You might also want to consider the audience for your answer -- what would be more understandable to whoever is reading your paper: 13/5 cm or 2.6 cm? For me, I had to stop and think about how big 13/5 cm is, but just a glance at 2.6 cm tells me it is just over an inch.
John
My calculator said it, I believe it, that settles it
