Question

your physics book has a mass of 400g. It is kept on a horizontal table. Taking g=10m/s^2,find the force(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​

Answer 1

Answer:

forcenis mg which is 400*10/1000 means 4 N

as per newtons third law a and b both are 4 N

other ques are also 4 N only mate..hope this helps you