Physics Lect 2

Newton's Laws
- 1) Law of Inertia
- 2) F = ma
- 3) For every action there is an equal and opposite reaction
The law of Universal Gravitation
- F = G (m₁m₂/r²)
- G = 6.67*10^-11 m³/kg/s
cos (0)

1
sin (90)

1
sin (30)

0.5
Circular Motion: Acceleration and Force
- a_c = v²/ r
- F_c = (mv²) / r
- * whenever F_c exists some other force is responsible for it
Normal Force for Inclined Planes

F_n = mg cosθ
Solving for F_n on a curved surface
- F_n = mg cosθ + F_c
- F_c = (mv²) / r
Tension

tension is constant throughout the rope
Hooke's Law

F = -k Δx

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laskiru

58865

Card Set

Physics Lect 2

Description

Forces

Updated

2011-01-10T03:39:38Z

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