【Daily Question】Theoretical Foundation 2020.01.07
Thread Content
Multiple-choice question: In the framed structure shown, if the horizontal force P acting at point B is moved along its line of action to point C, then the restraining forces at points A and D ( ). (A) None change (B) All change (C) Only A changes (D) Only D changes. Answer: A. According to the transmissibility of force, a force acting on a rigid body can be shifted along its line of action to any point within the rigid body without altering the effect of that force on the rigid body. Hint: An additional reward will be given to those who can explain the problem-solving process; the answers can be seen here!
Multiple-choice question: In the framed structure shown, if the horizontal force P acting at point B is moved along its line of action to point C, then the restraining forces at points A and D ( ). (A) none change