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In the figure shown m(1)=1 kg,m(2)=2kg, ...

In the figure shown `m_(1)=1 kg,m_(2)=2kg`, pulley is ideal. At `t=0`, both masses touches the ground and string is taut. A force `F=2t` is applied to pulley (t is in second) then `(g = 10 m//s^(2))` :

A

`m_(2)` is lifted off the ground at `t=20` sec

B

acceleration of pulley when `m_(2)` is about to lift off is `5 m//s^(2)`

C

`m_(1)` is lifted off the ground at `t=0` sec

D

both blocks are lifted off simultaneously

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a,b,c
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