The sum of internal forces is always zero.
The sum of the internal forces on a system always equal to what? Click the answer...
Click the answer you think is right The sum of the external forces Zero The net force on the system Read about this Do you know the answer?
Type your answer in the box. cost is the sum of fixed cost and variable cost at each level of output. Do you know the answer? Read about this I know it Think so Unsure No idea
The sum of the kinetic and potential energies of a system of objects is conserved: only when no external force acts on the objects only when the objects move along closed paths O only when the work done by the resultant external force is zero O always none of the above
Question 1 5 pts In dynamics, reaction forces are not constant but can change direction. True False Question 2 5 pts What is the difference between a rigid body and a flexible one? O The points on a flexible body do not always remain the same distance from each other. O A flexible body has a nominal shape when not acted on by external forces. A rigid body experiences internal forces. None of the above. Question 3 5 pts What...
Instructions: Answer the following questions on separate paper OR within the Word document or Libre office by adding space in between the questions. 1. If the acceleration of a system is zero, are no external forces acting on it? What about internal forces? Explain your answers. 2. If a constant, nonzero force is applied to an object, what can you say about the velocity and acceleration of the object? 3. When you take off in a jet aircraft, there is...
17,18,19 and 20 17) Which statement about the centre of mass (COM) of a segment is incorrest? b) You need to know the location of the segment COM (relative to the joint axis) to determine the c) The СОМ is typically measured front the proximal end of the segment The segment COM cannot be determined based on an individuar right 18) Given muscle forces A and 8 that are equal in magnitude and act at the hip joint, what is...
What organelle in a eukaryotic cell provides most of the cell's ATP? Click the answer you think is right. Golgi apparatus mitochondrion nucleus chloroplast Do you know the answer? I know it Think so Unsure 22 items left ?0 F3 F4 FS F6 F7 F8
Learning Goal: To gain practice drawing free-body diagramsWhenever you face a problem involving forces, always start with a free-body diagram.To draw a free-body diagram use the following steps:Isolate the object of interest. It is customary to represent the object of interest as a point in your diagram.Identify all the forces acting on the object and their directions. Do not include forces acting on other objects in the problem. Also, do not include quantities, such as velocities and accelerations, that do...
Q1) Answer all Multiple Choice questions.i) Newton’s 1st law is:A. PHYSICALLY INDEPENDENT of the other two laws of motion and CANNOT be dispensed with as an axiom of Newtonian physics.B. PHYSICALLY INDEPENDENT of the other two laws of motion, but nonetheless it CAN be dispensed with as an axiom of Newtonian physics.C. Actually a SPECIAL CASE of the 2ND LAW. The case when the net force is zero. Therefore, logically we need only two laws of motion. Perhaps for clarity...
Two forces act on an object, as shown. Which vector best represents the direction of a third force F, that will cause the system to be in equilibrium, \ ' Click the answer you think is right A) C) E)