1.

A simple pendulum has a time period T_(1). When its point of suspension is moved vertically upwards according as y=kt^(2),where y is vertical covered and k=1 ms^(-2) , its time period becomes T_(2) then(T_(1)^(2))/(T_(2)^(2)) is (g=10 ms^(-2))

Answer»

`(5)/(6)`
`(11)/(10)`
`(6)/(5)`
`(5)/(4)`

SOLUTION :`T=T_(1)= 2pi sqrt((l)/(G))`
`:.T_(1)^(2)= 4PI^(2)((l)/(g))`
`y= kt^(2)`
`K= 1 MS^(-1)`
`:. Y= t^(2)`
`:. (y_(1))/(y_(2))=(T_(1)^(2))/(T_(2)^(2))=(6)/(5)`


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