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The equation of motion of a particle sta...

The equation of motion of a particle starting at `t=0` is given by `x=5sin(20t+π/3)`, where x is in centimeter and t is in second. When does the particle come to rest for the second time?

A

`π/10 s`

B

`7π/100 s`

C

`7π/120 s`

D

`5π/7 s`

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