Mast gPh week 5 Google Chrome https:// mastering physics.com assignment 61705687

Question

Mast gPh week 5 Google Chrome https:// mastering physics.com assignment 61705687 ProblemID SC122 15DONELSON16 week 5 Problem 5.46 Problem 5.46 Part A What is the force constant (in N/m) of this spring? An unstretched spring is 18.0 cm long. When you hang an 780 g weight from it, it stretches to a length of 21.0 cm. N /m My Answers Give Up Submit Incorrect, Try Again, 5 attempts remaining Part B What total mass must you hang from the spring to stretch it to a total length of 24.0 cm kg Submit My Answers Give Up EE O I'm Cortana. Ask me anything Signed in as Steve Lockwood Help Close Resources previous l 9 of 18 l next 8:19 PM 5/8/2016

Explanation / Answer

A) force constant is k = F/x = (0.78*9.8)/(0.21) = 36.4 N/m

B) F = k*x

m*g = 36.4*(0.24) = 8.736

mass m = 8.736/9.8 =0.891 kg = 891 g

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