# Block on Block

A small block B is placed on another block A of mass $$5 \text{ kg}$$ and length $$20 \text{ cm}$$. All the surfaces are frictionless.

Initially, block B is near the right end of block A as shown in the figure. A constant horizontal force of $$10 \text{ N}$$ is applied to block A.

Find the approximate time elapsed in seconds, before block B separates from A.

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