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1. The problem statement, all variables and given/known data

An object undergoes simple harmonic motion with its position described by

x(t ) = 50sin (2piet/3)

C) when is Velocity first equal to 80 D) whe nis the Velocity next equal to 80

2. Relevant equations

3. The attempt at a solution

k iknow you have to find the derivative.. which i think is this.

V(t)= 50cos(2.094t)(2.094)

= 104.7cos(2.094t)

then set it to 80: 80=104.7sin(2.094t)

i dont know where to go from here :S

and for D) i have no idea wher to start!

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# Homework Help: An object goes through simple harmonic motion with its position described as

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