A book rest on a table which it's face having a sides 30cm by 25cm . if it exerts apressure of 200pa then determine the mass of the block.​

Approximately . (Assuming that this table is level, and that the gravitational field strength is .

Explanation:

Convert the dimensions of this book to standard units:

.

.

Calculate the surface area of this book:

.

Pressure is the ratio between normal force and the area over which this force is applied.

.

Equivalently:

.

In this question, .

It was found that (assuming that the entire side of this book is in contact with the table.

Hence:

.

If that the table is level, this normal force would be equal to the weight of this book:

.

Assuming that the gravitational field strength is . The mass of this book would be:

.

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explanation:

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