Question

The reaction force exerted by the table on $100g$ book which is kept stationary on table is .($g=10m{s}^{-2}$)

• A. $10N$
• B. $0.1N$
• C. $1N$

Answer 1

The correct option is C $1N$

Mass of the book,$m=100g=\frac{100}{1000}kg$
Weight of the book = $mg$ = $\frac{100}{1000}\times 10=1N$
Reaction force exerted by table on book is equal to weight of the book.
$\therefore Reactionforce=1N$