1.

A uniform rod (mass m, length L) and a simple pendulum (light rod of length 'l' and bob of point mass m) are released under gravity with one end hinged about a horizontal axis as shown. They take time t_(1) and t_(2) respectively to become vertical for the first time. Neglect air resistance.

Answer»

`(t_(1))/(t_(2))=SQRT((2L)/(3L))`
`t_(1)` is doubled if m is doubled
`(t_(1))/(t_(2))=sqrt((3L)/(2l))`
`t_(1)` is UNCHANGED even if m is doubled

Answer :A::D


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