A straw of length L, mass M lies over a smooth horizontal table with its `(`2/3`)^(rd)` part hanging in air. There is an insect of mass m at the end of straw initially. Insects slowly moves on straw to other end such that straw never falls off the table.

Options

A. Displacement of straw w.r.t. ground (in terms of m,M,L)
when the insect reaches the other end of straw is `(mL)/(M+m)`
B. Displacement of straw w.r.t. ground (in terms of m,M,L) when the insect reaches the other end of straw is `(2mL)/(M+m)`
C. The minimum mass ratio `(m/M)` of insect of straw is `1/2`
D. The minimum mass ratio `(m/M)` of insect of straw is `1/4`

Answer

A,C