Warmup "The centripetal force should not appear on a free-body diagram as one of the forces acting on an object." yes, because centripetal force is like ma, and should not be on the free-body diagram. there is no centripetal force, but rather a force of tension, gravity, friction, or a normal force ebaker disagree...because the centripetal force affects the objects and must be added to the free-body diagram rabu Disagree. Just like every other force, centripetal force acts on a body to influence it's acceleration and change in direction rayyala I agree with this statement because there is a net force acting inwards in the system. However, this force is can be accounted for by the other forces acting on the body, such as the normal force, etc. gbrun I agree with this statement because the centripetal force in this case is due to the tension force of the string. mjctkd I disagree. A free-body diagram should contain all the forces acting on an object. manishad Centripetal force is made up of other forces, so the other forces should be stated as they are. erikd I agree because that force is given by an equation. It's a force but it's like the force given by mass * acceleration. mcullen I agree with this beacuse there is no centripetal force. This is not a real force. It is true that there is always a force that points into the center of a circle but it is not a centripetal force. It usually is tension, friction or some other force acting on an object that is in circular motion. monicad I agree, because it can also be one of the other forces, like tension or gravity. The name just indicates direction (towards the center of the circle). chown I agree!!!!!!!!!!!!!!!!!! Professor Duffy said not to include the centripetal force on a free body diagram because it is already included in the tension or gravity or what not. ikhayal Yes, because you said so in class! bgrigos should not because the tension in the string is the centripital force rume That would imply that it is going faster with each revolution hessm Centripital force is made up of other forces we have already learned about, like tension for instance, and therefore it is easier to label the cetripital force for what it is instead of just centripital force. pjung should appear..... there is an inward acceleration agulsrud I disagree it should appear because it represents the constantly changin velocity (in direction) justynj i disagree because the centripetal force is the only force that keeps the ball up. dlitvak Agree, because the direction of the centripetal force is not constant and varies continuously. lopezk YES. Centripetal force should appear on a free body diagram. All forces should be drawn in a free body diagram. kml13 I agree...it doesn't really matter because like you said in class, we neglect to include "ma" in our free body diagrams so why should this be any different. zahar The centripetal force should not appear on the free- body diagram, if the tension on the object is given. The tension consists of x and y direction components. The x component is centripetal force, and y component is the gravity force. Therefore, the tension already takes into the account the centripetal force, which should not be indicated on the diagram lpage I agree with this statement. A cetipetal force only appears when there is an acceleration on a body by changing the direction of the body's velocity without changing the body's speed. dcrosy I agree with this statement, because what it really is a net force of all the components. tnorton I disagree, i believe that centripetal force, is a pull directed inward along the radial axis extending through the object, and should be represented on a free body diagram sascott I do not agree with this statement. The centripetal force is pulling the ball away from the center of the circle. shazeeb I disagree because the centripetal force is just like any other force eg. normal force or mg. Therefore, centripetal force must be taken into consideration. etasch Yes, because the cetripetal force is not really a force at all...it is the gravitational force pulling at a body inwardly. Therefore, putting it on a free body diagram confuses someone into thinking c.force is an actual force. iansmith because this force is always changing magnitude and direction dwalker I agree with this statement. Centripetal force should not be confused with centripetal acceleration. Since there is constant velocity there is no acceleration and there should not be any acceleration drawn in the free body diagram. flynt The centripetal force will and should appear on a free-body diagram if there is circular motion present. Of course it should not be called the centripetal force. It should be reffered to as what it truely is and that depends on the situation. It could be the tension on a string or the force due to gravity affecting an orbiting body. kidcolin Yes, I do, because the force can be represented as other forces. bdsachs Disagree, for no reason other than the free body diagram is one that displays an object with all of the forces that act upon it. As centripetal force is a force, it should be included in the diagram. mitesht I agree, because adding a centripetal force vector to a free body diagram may seem confusing because it looks like another added force. There is a force attributed to friction, gravity or some other external force that accounts for this centripetal force. Having both on a diagram may lead someone to think there are two forces, when they are one and the same. jcwhit I agree, because centripetal force is nonexistent rzipagan I think that it should appear on the diagram because it changes the direction of the body's velocity, which acts as a force. twong i agree because the centripetal force is usually actually one of the forces that are normally used (i.e. gravity, normal, friction). crivero I disagree because it is acting on the ball. jswenson I disagree. All forces should appear on a free-body diagram, even if it is not later used in calculations. It is important to get an idea of what is having an effect on an object. echeung Because it is just another form of net forces. We don't put that on the free-body diagram.