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12 Cards in this Set
- Front
- Back
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newtons First Law
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Objects velocity doesnt change unless acted upon by a force
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Newtons Second Law
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Fnet = ma, acceleration is always in same direction as force (NOT velocity).
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Newtons Third Law
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To every action there is equal but opposite reaction.
Effects of the forces are different |
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Newtons Law of Gravitation
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Fgravity = G* Mm/r^2,
g= G * M/r^2 |
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Static Friction
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When there is no sliding (no relative motion between surfaces)
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Kinetic Friction
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When there is relative motion between surfaces (sliding)
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Normal Force
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Force that acts perpendicular to the surface
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Force of Kinetic Friction
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F =m (k) * F (n)
m (k) - coefficient of kinetic friction Direction of the force is opposite to the direction of velocity (parallel to surface) |
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Maximum Force of Static Friction
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Fmax = m (s)* F (n)
m (s) - coefficient of static friction m(s)>m(k) Direction of force opposite to the direction of intended velocity |
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Force due to gravity acting parallel to the inclined plane
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F = mg sin (incline angle)
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Normal force exerted by inclined plane
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F = mgcos (incline angle)
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Pulley
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Device that changes direction of tension that pulls on the object that string is attached to
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