Lesson: Chapter 12 — Equilibrium of Forces

12.4. Equilibrium under three non-parallel forces 6 of 8 Reset answers

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Question 6

With a force of 20 N already applied to a body, what happens if a force of 25 N is applied in the opposite direction?

A The body moves in the direction of the 20 N force B The body turns C The body stays in equilibrium D The body moves in the direction of the 25 N force

The right answer is the one marked above.

The body moves in the direction of the 25 N force. The resultant is 25 N − 20 N = 5 N, acting that way.

Equilibrium breaks not because a force was added, but because the two forces are no longer equal.

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