Siyapath
Sign up

Lesson: Chapter 9 — Resultant Force

9.2. The resultant of two collinear forces 5 of 12

Question 5

One child pushes an object on a table in one direction with a force of 5 N while another child pulls it in the same direction with a force of 7 N. What is the resultant of the two forces?

The right answer is the one marked above.

12 N. One is a push and the other a pull, but both act in the same direction — so 5 N + 7 N = 12 N.

The trap here is letting the words "push" and "pull" suggest the forces oppose each other and writing 7 − 5 = 2 N. It is the direction that decides, not the word.

Answer the question to continue.