Question

A book of mass 20 g is placed on a table. Find the thrust exerted by the book on the table. (Take acceleration due to gravity as $10m{s}^{-2})$.

• A. 0.1 N
• B. 0.2 N
• C. 0.3 N
• D. 0.4 N

Answer 1

The correct option is B 0.2 N

Mass of book $\left(m\right)=20g$ $=\frac{20}{1000}kg=\frac{1}{50}kg$
Acceleration due to gravity (g) $=10m{s}^{-2}$
$\Rightarrow T=\frac{1}{50}\times 10=\frac{1}{5}N=0.2N$.
Therefore, the thrust acting on the table by the book is 0.2 N.