Balanced and Unbalanced Forces Answer Page
1.Two tugboats are moving a barge. Tugboat A exerts a force of 3000 newtons on the barge. Tugboat B exerts a force of 5000 newtons in the same direction. What is the combined force on the barge?
ANSWER: 8000 newtons
2.Draw arrows showing the individual and combined forces of the tugboats in #1.
ANSWER: ------> + ----------> = ---------------->
3.Now suppose that Tugboat A exerts a force of 2000 newtons on the barge and Tugboat B exerts a force of 4000 newtons in the opposite direction. What is the combined force on the barge?
ANSWER: 2000 newtons (in the direction of Tugboat B)
4.Draw arrows showing the individual and combined forces of the tugboats in #3.
ANSWER: ----> + <-------->
5.Could there ever be a case when Tugboat A and Tugboat B are both exerting a force on the barge but the barge doesn't move? Draw arrows showing the individual and combined forces in such a situation.
ANSWER: Yes, if the forces are balanced. --------> + <-------- (combined force equals zero.
