Question

A book of mass 5 kg is placed on a table and it is pressed by 10 N force then, normal force exerted by the table on the book is?

Answer 1

Mass of book=5kg
Then force exerted by earth on book= mg=5×9.8=49 N
External force exerted on book = 10
By Newton's third law of motion we get,
Force exerted by table on book= mg+10=49+10=59N

Hence force exerted by table on book = 59 N