Question

A tugboat is pulling a barge into a harbor. The barge is exerting a force of 3000 N against the tugboat. Which force would most likely allow the tugboat to move the barge into the harbor? –4500 N –2500 N 2500 N 4500 N

Answer 1

The answer is -4500 N

Step-by-step explanation:

I just got it right on the test

Answer 2

the correct one is F’= 4500 N

Step-by-step explanation:

To solve this problem we must use Newton's second law

where F₁ is the force of the barge F₁ = 3000N and the force of the tugboat is F '

F '- F₁ = m a

we substitute

F '- 3000 = m a

the mass is always a positive quantity, therefore if we want the tug to pull the barge

F ’-3000> 0

when you check it, you respect the correct one is F’= 4500 N