4-6 Weight—the Force of Gravity; and the Normal Force
{"Image DocumentName": "4-6 Weight\u2014the Force of Gravity; and the Normal Force", "Image ImageDescription": "An object at rest must have no net force on it. If it is sitting on a table, the force of gravity is still there; what other force is there? The force exerted perpendicular to a surface is. called the normal force. It is exactly as large as needed to balance the force from the object. (If the required force gets too big, something breaks!) Figure Caption: (a) The net force on an object at rest is zero according to Newton\u2019s second law. Therefore the downward force of gravity (FG) on an object at rest must be balanced by an upward force (the normal force FN) exerted by the table in this case. (b) F\u2019N is the force exerted on the table by the statue and is the reaction force to FN by Newton\u2019s third law. (F\u2019N is shown in a different color to remind us it acts on a different object.) The reaction force to FG is not shown.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}