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Figure shows a block P of mass m resting...

Figure shows a block P of mass m resting on a smooth floor at a distance l from a rigid wall. Block is pushed towards right by a distance `3//2` and released. When block passes from its mean position another block of mass `m_(1)` is dropped over it, find the minimum value of `m_(1)` so that the combined block just collides with the left wall.

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