2 3 4 newtons third law if object 1 and object 2

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Unformatted text preview: s Second Law •  g is the accelera2on due to gravity Assume you are on planet X that its mass and radius are twice of Earth’s mass and radius. What is the gravita2onal accelera2on gX on planet X? 1.  2.  3.  4.  2 4.9 m/s 2 9.8 m/s 2 19.6 m/s 2 2.5 m/s 35% 29% 31% 5% 1. 2. 3. 4. Newton’s Third Law •  If object 1 and object 2 interact, the force exerted by object 1 on object 2 is equal in magnitude but opposite in direc2on to the force exerted by object 2 on object 1. •  F12 may be called the ac(on force and F21 the reac(on force –  Actually, either force can be the ac2on or the reac2on force •  The ac2on and reac2on forces act on different objects Some Ac2on- Reac2on Pairs •  –  is the normal force, the force the table exerts on the TV –  is always perpendicular to the surface –  is the reac2on – the TV on the table –  More Ac2on- Reac2on pairs •  –  is the force the Earth exerts on the object –  is the force the object exerts on the earth –  Forces Ac2ng on an Object •  Newton’s Law uses...
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This document was uploaded on 01/14/2014.

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