Question

show your work on problems 12-14

1. a boy pulls a wagon with a force of 6 n east as another boy pushes it with a force of 4 n east. what is the net force?

1. mr. smith and his wife were trying to move their new chair. mr. smith pulls with a force of 30 n while mrs. smith pushes with a force of 25 n in the same direction. what is the net force?

1. the classes are playing tug of war. mrs. larson’s homeroom pulls with a force of 50 n. ms. mitko’s homeroom pulls with a force of 45 n in the opposite direction. what is the net force? and who won?

1. what is a balanced force?

1. what is an unbalanced force?

1. draw a picture below that shows an example of a balanced force (examples: a bird’s nest in a tree, a hat on a person’s head, or a light hanging from a ceiling). show the forces acting on the object. in a separate picture show what would happen to the object if the forces became unbalanced.

Explanation:

Problem 12

Step1: Identify force directions

Both forces are east, so they add.

Step2: Calculate net force

Net force = 6 N + 4 N = 10 N east.

Step1: Identify force directions

Forces are in the same direction, so sum them.

Step2: Calculate net force

Net force = 30 N + 25 N = 55 N in the direction of the forces.

Step1: Identify force directions

Forces are opposite, so subtract.

Step2: Calculate net force

Net force = 50 N - 45 N = 5 N in Mrs. Larson’s direction.

Step3: Determine winner

Mrs. Larson’s homeroom has a larger net force, so they won.

Answer:

10 N east

Problem 13