The forces acting on a given body which are exerted by other bodies are referred to as external forces.
举一反三
- Which forces belong to external forces(). A: spring force B: damper force C: actuator force D: gravity force
- Major categories of external variables are: A: economic forces B: social and cultural forces C: political, governmental and legal forces D: technological forces E: natural forces
- 中国大学MOOC: A particle of mass m is exerted with a force. Which of the following forces is not a conservative force?(g, k, C, D and γ are constants, and υ is the speed of particle.)
- The US and other NATO forces attacked______. A: Afghan forces B: A1-Qaida extremists C: Taliban government D: both B and C
- Which of the following is NOT one of the competitive forces?