Question

state the direction.
2. Your physics book has a mass of 400 g. It is kept on
a horizontal table. Taking g = 10 m/s", find the
(both magnitude and direction) exerted by
(a) the table on the physics book
(b) the physics book on the table
(c) the earth on the physics book
(d) the physics book on the earth.
h force is needed to produce an​

Answer 1

Answer:

Force exerted by book on the table=Force exerted by book on the earth =Weight of the book, W = mg  

( Neglecting the mass of the table as it is not given)

Force exerted on the book by the table=Force exerted on the book by earth =Normal reaction force, N = mg (in magnitude)

Weight of the book = W = mg = 0.4 x 10 = 4 N   (Since, m=400 g=0.4 kg)

Therefore,

(a) 4 N upwards  

(b) 4 N downwards

(c) 4 N upwards

(d) 4 N downwards

Explanation: