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Comprehension # 1 If net force on a sy...

Comprehension # 1
If net force on a system in a particular direction is zero (say in horizontal direction), we can apply: `Sigmam_(R )x_(R )= Sigmam_(L)x_(L)`,` Sigmam_(R )v_(R )= Sigmam_(L)v_(L)` and `Sigmam_(R )a_(R ) = Sigmam_(L)a_(L)`
Here `R` stands for the masses which are moving towards right and `L` for the masses towards left, `x` is displacement, `v` is velocity and `a` the acceleration (all with respect to ground).
A small block of mass `m = 1 kg` is placed over a wedge of mass `M = 4 kg` as shown in figure. Mass `m` is released from rest. All surface are smooth. Origin O is as shown.

Final velocity of the wedge is ..........`m//s` :-

A

`sqrt3`

B

`sqrt2`

C

`(1)/(sqrt2)`

D

`(1)/(sqrt3)`

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