1.

The distance travelled in a time t, by a particle moving along X-axis according to an equation x = A cos omega t is given by S = nA + S_0, when time t can be written as t = n(T/4) + t_0 such that t_0 < T/4 and distance travelled in that t_0 is S_0. The distance S is, when ‘n’ is odd number

Answer»

`S = A [(N + 1) - cos (WT + (n PI)/(2))]`
`S = A [(n + 1) - cos (wt - (n pi)/(2))]`
`S = A [n + sin (wt - (n pi)/(2))]`
`S = A [n - sin (wt - (n pi)/(2))]`

Answer :C


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