Question

An object is at rest on a table. The gravitational force is 10 N down, and the normal force is 10 N up. What is the net force?

Answer 1

Answer:

answer is 0n

Explanation:

because the gravitational force cancels fnormal

and they even have same units and magnitude

Fnet= f normal - f gravity

Fnet = 10n-10n

= 0n

hope it is helpful

Answer 2

Answer: the force the table exerts upward on the book.

Explanation: Newton's third law of motion states that for an action there is always an equal and opposite reaction . These two forces always act on different objects . When a book is kept on a table , weight (gravitational force) of book acts on table  vertically downwards and as a reaction of weight , table also exerts an equal and opposite ( upward) force on book