A-mass-of-2kg-is-attached-to-a-spring-with-constant-8N-m-It-is-then-displaced-to-the-point-x-2-What-time-does-it-take-for-the-block-to-travel-to-the-point-x-1-a-40s-b-60s-c-30s-d-20s-

Question Number 33533 by NECx last updated on 18/Apr/18

A m a s s o f 2 k g i s a t t a c h e d t o a

s p r i n g w i t h c o n s t a n t 8 N / m . I t i s ⊛

t h e n d i s p l a c e d t o t h e p o i n t x = 2 .

W h a t t i m e d o e s i t t a k e f o r t h e b l o c k

t o t r a v e l t o t h e p o i n t x = 1 ?

a) 4 0 s b) 60 s c) 30 s d) 20 s

Answered by ajfour last updated on 18/Apr/18

x = 2 \cos ω t = 2 \cos (\sqrt{\frac{k}{m}} t)

1 = 2 \cos (\sqrt{\frac{8}{2}} t)

\Rightarrow 2 t = \frac{π}{3} \Rightarrow t = \frac{π}{6} s .

Commented by NECx last updated on 19/Apr/18

t h a n k y o u s o m u c h s i r A j f o u r . Y o u r

p r e s e n c e i s r e a l l y f e l t .

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