Question

A book is sitting on a desk. If the surface area of the book's cover is 0.05 m², and atmospheric pressure is 100.0 kPa, what is the downward force of the atmosphere on the book

Answer 1

5000N

Step-by-step explanation:

Given parameters:

Area of the book cover = 0.05m²

Atmospheric pressure = 100kPa = 100 x 10³Pa

Unknown:

Downward force of the atmosphere on the book = ?

Solution:

Pressure is defined as the force per unit area on a body.

So;

Downward force = Atmospheric pressure x Area

Downward force = 100 x 10³ x 0.05 = 5000N