Question

Vijaya
1) A book exerts a force of 2N
downwards, into a chair that exerts
a force of 5N downwards to the floor
it stands on. What is the force that
the floor exerts upwards on the
chair?​

Answer 1

Answer:

7N

Explanation:

By Newton's third law, for every reaction there is an equal and opposite reaction. The floor must exert a 7N force upwards on the chair for the system to remain at rest. If it exerted less than that, the chair would be accelerating into the floor. This force, exerted by a surface, perpendicular to it, is called the normal force.

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Answer 2

Answer:

7n. is the answer for ur question