> C | www.webassan.netweJ/Student/Assignment Responses lastdep:181 12475 Accordi

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> C | www.webassan.netweJ/Student/Assignment Responses lastdep:181 12475 According to our records you have not yet redeemed an access code for this class or purchased access online. The grace period will end Thursday, February 1 2018 at 12:00 AM PST. After that date you will no longer be able to see your WebAssign assignments or grades Get access now Part 8 of 8- Analyze Now Amita and Winnie are ready to try a problem. A mass is suspended by a spring In a viscous liquid. The mass of the object is 0.7 g, the spring constant Is 1.00 N/m, and b = 0.1 N·s/m. Over what time interval does the amplitude drop to half its initial value? Submit Skip (vou cannot come back Need Help?ReadIt Submit Answer Save Progress Practice Another Version Submit AssianmentSave Assignment Progress

Explanation / Answer

damping constant, c = b / 2 m

c = 0.1 / (2 x 0.7 x 10^-3) = 71.4 s^-1

A = A0 e^(-ct)

0.5 A0 = A0 e^(-71.4t)

- 71.4 t = ln(0.5)

t = 9.70 x 10^-3 s

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