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March 30, 2015

March 30, 2015

Posted by **Brian** on Friday, March 30, 2012 at 1:55pm.

My work...

Aw=Aw

A(sqrt of k/m) = A(sqrt k/m)

(sqrt of 186) = 3 (sqrt of k)

(sqrt of 186)/3 = (sqrt of k)

[(sqrt of 186)/3] ^2 = k

I got 20.6 but this is wrong, Please help!

- physics -
**Damon**, Friday, March 30, 2012 at 3:31pmbody 1

x = sin 2 pi f t

v = 2 pi f cos 2 pi f t

a = -(2pi)^2 f^2 sin 2 pi f t

-k x = m a

- k x = - m(2pi)^2 f^2 sin 2 pi f t

- k/m = - (2 pi)^2 f^2

f = (1/2pi) sqrt(k/m)

body 2

x = 3 sin 2 pi F t

v = 3 (2 pi) F cos 2 pi F t

- K/m = -3 (2 pi)^2 F^2 sin 2 pi F t

-K/m =-(2 pi)^2 F^2

F = (1/2pi) sqrt(K/m)

the to v values are equal in magnitude

2 pi f = 6 pi F

2 pi ((1/2pi) sqrt(k/m)= 6 pi(1/2pi) sqrt(K/m)

sqrt(k/m) = 3 sqrt(K/m)

k/m = 9 K/m

K = k/9 = 20.67

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