MCQ

Consider the equations `P=lim_(triangles->0)"F"/(triangle"S")` and P_{1} - P_{2} = pgz. In an elevator accelerating upward

#### Options

both the equations are valid

the first is valid but not the second

the second is valid but not the first

both are invalid

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#### Solution

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 P_{1} - P_{2} = ρ(g+a_{0})z

Here, acceleration* **a*_{0}_{ }(say) due to elevator accelerating upwards is also taken into account.

Concept: Pressure - Pascal's Law

Is there an error in this question or solution?

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