Physics
Explain the following:
When a corridor train suddenly starts, the sliding doors of some compartments may open.
Laws of Motion
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Answer
The reason is that the frame of sliding door being in contact with the floor of the train also comes in motion on start of train, but the sliding door remains in it's position due to inertia.
Thus, the frame moves ahead with the train while door slides opposite to the direction of motion of the train. Thus, the door may open.
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