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A particle oscillates as per the equatio...

A particle oscillates as per the equation `x = (7 cos 0.5 pi t)m`, the time taken by the particle to move from the mean position to a point `3.5m` away is

A

1/3 s

B

1/2 s

C

1s

D

2/3 s

Text Solution

Verified by Experts

The correct Answer is:
A
`A = 7m , x = 3.5 m = (A)/(2)`
`x = 0 rArr = x = (A)/(2)"takes"(T)/(12)` time
`T = (2pi)/(0.5 pi) = 4s rArr t = (4)/(12) = (1)/(3)s`
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Knowledge Check

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