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Download Physics 110G Gravity, Force and Space
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Physics 110G Gravity, Force and Space Tension TOC T The magnitude of the tension is the same everywhere in the rope. T 1 Physics 110G Gravity, Force and Space Name of Force TOC Symbol 2 Tension T When does this force occur? If an object that is experiencing the force is pulling but not stretching another object Where does this force occur? On the object that is experiencing the force at the point where the pulling occurs Magnitude Determined using Newton’s Second Law Direction Toward the center of the object being pulled (rope, wire, etc.) Associated Energy No associated energy Physics 110G Gravity, Force and Space Spring Force TOC k x Fsp 3 Physics 110G Gravity, Force and Space Name of Force TOC Symbol Fspring When does this force occur? If an object that is experiencing the force is stretching (or compressing) another object Where does this force occur? On the object experiencing the force where it connects to the object that stretches/compresses Magnitude 4 Spring Force kx Direction Toward the center of the object that stretches or away from the center of the object that compresses Associated Energy Elastic Potential Energy Physics 110G Gravity, Force and Space Gravity TOC m1 FG m2 r FG 5 Physics 110G Gravity, Force and Space Gravity Name of Force TOC FG Symbol When does this force occur? If there are two massive objects present Where does this force occur? At the center-of-mass of the object receiving the force Magnitude 6 or w mm G 1 2 2 or mg r G 6.67 10 11 Nm2 kg 2 g 9.81 Direction Toward the center of mass of the other massive object Associated Energy Gravitational Potential Energy m s2 Physics 110G Gravity, Force and Space Gravity (near the earth’s surface) TOC m w mg ˆj Mass of the earth 6x1024 kg Radius of the earth 6.375x106 m 2 11 Nm 24 6.67 10 5 . 99 10 mm 2 kg GM e m m F 9 . 81 m mg 2 2 2 6 s Re 6.38 10 m 7 Physics 110G Gravity, Force and Space Normal Force TOC N w 8 Physics 110G Gravity, Force and Space Name of Force TOC Symbol 9 Normal Force n, FN or N When does this force occur? If an object touches the surface of another object Where does this force occur? On the object receiving the force at the point(s) where it touches the surface Magnitude Determined using Newton’s Second Law Direction Perpendicular to the surface and from the object exerting the force to the object experiencing it Associated Energy No associated energy Physics 110G Gravity, Force and Space Friction TOC N f 10 Physics 110G Gravity, Force and Space Name of Force TOC Symbol fs or fk When does this force occur? If an object touches the surface of another object Where does this force occur? On the object receiving the force at the point(s) where it touches the surface Magnitude 11 Friction s N or k N Direction In a direction that opposes the motion or the possibility of motion Associated Energy Thermal Energy Physics 110G Gravity, Force and Space Drag TOC D 12 Physics 110G Gravity, Force and Space Drag Name of Force TOC D Symbol When does this force occur? If an object is moving through a liquid or gas. Where does this force occur? On the object receiving the force at the point(s) where it touches the liquid or gas Magnitude 13 4 m 1 2 / kg Av 2 Direction In a direction that opposes the motion Associated Energy Thermal Energy
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