Mechanics Flashcards
1
Q
Newtons 1st Law
A
An object in motion stays in motion.
No net force = no acceleration
2
Q
Newtons 2nd law
A
F= ma
Net force is the sum of all forces on an object
Tells us about acceleration not velocity
3
Q
Newtons 3rd law
A
Action reaction pair. Are equal in magnitude and opposite in direction.
Says nothing about mass of objects
4
Q
Gravity and gravitational equation
A
g= G (M/r^2)
5
Q
Static and kinetic friction
A
Static friction coefficient is always greater than kinetic friction coefficient
Kinetic friction must be weaker than maximum static friction force
6
Q
Force due to gravity on incline plane
Normal force on incline plane
Friction on incline plane
A
Mg sin€
Mg cos€
u*Mg cos€
