Forces & Newton's Law Flashcards
Equilibrium, Connected Bodies & Inclined Planes (13 cards)
1
Q
State Newton’s 1st Law
A
- object at rest, stays at rest
- object with constant velocity continues with constant velocity
2
Q
Formula: Resultant force
A
Σ forces
3
Q
Formula: Equilibrium
A
Σ Fx = 0
Σ Fy = 0
4
Q
Formula: Magnitude of Resultant Force
A
(square root) (ΣFx)^2 + (ΣFy)^2
5
Q
Formula: Angle of Force
A
tan ^ -1 ( ΣFy / ΣFx )
6
Q
Formula: Force in x-axis
A
F cos(theater)
- adjacent to angle
7
Q
Formula: Force in y-axis
A
F sin(theater)
- opposite to angle
8
Q
State Newton’s 2nd Law
A
F = ma
9
Q
Which property do connected bodies share & why?
A
- acceleration
- String is inextensible
10
Q
Write F = ma in both column format & i - j notation
A
- refer to notes for answer
11
Q
Formula: Normal Force
A
mg cos(theater)
12
Q
Formula: Ax
A
g sin(theater)
13
Q
Formula: Friction
A
μ (mu) x Normal Force
