1.

A body executes S.H.M. under the influence of one force and has a period T_(1) second and the same body executes S.H.M. with period T_(2) second when under the influence of another force. When both forces act simultaneously and in the same direction, then the time period of the same body is :

Answer»

`(T_(1)+T_(2))s`
`SQRT(T_(1)^(2)+T_(2)^(2))s`
`sqrt((T_(1)^(2)+T_(2)^(2))/(T_(1)T_(2)))s`
`sqrt((T_(1)^(2)T_(2)^(2))/((T_(1)^(2)+T_(2)^(2)))s`.

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