The system is released from rest. Calculate the speed of wedge (in \(\text{ms}^{-1}\)) when block reaches the bottom of the wedge.

**Details and assumptions:**

Wedge is movable

Mass of wedge is twice the mass of block

The height of the wedge is 20 meters

The angle of inclination is \(30 ^\circ\)

Take \(g = 10 \, \text{ms}^{-2}\)

All the surfaces are smooth

Give your answer to 2 decimal places.

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