Newton’s Laws
Newton’s Second Law
Net Force = Mass times Acceleration
Newton’s second law
F = ma
Fg
Force of Gravity
Weight
FW = Fg = mg
Static Friction
Occurs when two surfaces press against each other without sliding or slipping relative to one another
Newtons Third Law
when two objects interact, they exert equal and opposite forces on each other
F (A on B) = - F (B on A)
Hooke’s Law
F = -kx
FN
Normal Force
Centripetal acceleration
ac = v2/r
Kinetic friction
when two surfaces slide against each other, with the friction force acting in the opposite direction of the relative motion between the surfaces
Newton’s First Law
an object at rest will remain at rest, and an object in motion will continue moving at a constant velocity unless acted upon by an unbalanced force
Coefficient of Friction
μ = Ff/FN
FT
Tension Force
Period for an object traveling at a constant speed in circular motion
T = 2πr/v
Fk
Spring Forces
Equation for balanced forces/equilibrium
Net Force = 0
Center of Mass
xcm = ∑mixi/∑mi
FA
Applied Force
Law of Universal Gravitation
Fg = Gm1m2/r2
Relationship between Period (T) and Frequency (f)
Inversely proportional
Equation for unbalanced forces
Net Force ≠ 0
Kepler’s Third Law
T2 = 4π2R3/GM
Fair
Air Resistance
Speed of an object at the top of a vertical, circular loop
v = √gr
What is a system
A collection of objects that can be identified