A 1 kg block is released from rest from the top of a smooth curved wedge of mass 4 kg. Origin O is at the lower-left corner; the wedge dimensions are shown (4 m horizontally, 4 m left height, 2 m right height). All quantities are with respect to ground.
Physics · Center of maas , Momentum and Collision · momentum and conservation of momentum
A 1 kg block is released from rest from the top of a smooth curved wedge of mass 4 kg. Origin O is at the lower-left corner; the wedge dimensions are shown (4 m horizontally, 4 m left height, 2 m right height). All quantities are with respect to ground.

Sub-question 1
At the same instant, reaction on the wedge from the ground is:
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