Two blocks of masses 2 kg and 4 kg are k...

Two blocks of masses 2 kg and 4 kg are kept on a frictionless and smooth inclined plane. The angle of inclination with horizontal is `30^(@)`. A force of 60 N is applied parallel to the plane in upward direction. Find out the normal force in between two blocks.

20 N

40 N

60 N

80 N

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