A tugboat is pulling a barge into a harbor. The barge is exerting a force of 3000 N against the tugboat.

Available options are:

A. –4500 N

B. –2500 N

C. 2500 N

D. 4500 N

-4500 N

Explanation:

Given that we have F₁ = 3000N? (force of the barge)

the force of the tugboat is F '

To pull the barge, the force of the tugboat must be greater than or equal to the force of the barge.

Hence, according to Newton's third law which states that for every action or force in nature, there is an opposite reaction.

Therefore considering the available option the correct answer is "- 4500N, " this is because it is greater than the force of the barge and it's in opposition to the force exerted.