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प्रश्न
Consider the equations `P=lim_(triangles->0)"F"/(triangle"S")` and P1 - P2 = pgz. In an elevator accelerating upward
विकल्प
both the equations are valid
the first is valid but not the second
the second is valid but not the first
both are invalid
उत्तर
the first is valid but not the second
For a point inside the elevator, pressure can be defined as `P=lim_(triangles->0)"F"/(triangle"S")`. It is independent of the acceleration of the elevator.
The modified form of the second equation, which will be valid in the given case, is given by P1 - P2 = ρ(g+a0)z
Here, acceleration a0 (say) due to elevator accelerating upwards is also taken into account.
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