laws Flashcards
(29 cards)
1
Q
Fc 2 laws
A
m r omega2 - —– mv2/r
2
Q
theta
A
s/r
3
Q
s
A
r x theta
4
Q
f
A
1/t
5
Q
Ac
A
v2/r
6
Q
omega 3 laws
A
2pif
theta/t
2pi/t
7
Q
v
A
omega x r
8
Q
a
A
sqrt ac2 + act
9
Q
tan theta
A
ac/at
10
Q
maximum velocity (friction thing)
A
sqrt mu g r
11
Q
oblique turns
A
tan theta = v2/rg
to calculate turn heigt
sin theta = height / widtjh
12
Q
real weight
A
m g
13
Q
if elevator static
A
w app = w real?
n-w=ma
14
Q
if elevator descending
A
wapp = w real - ma
w-n=ma
15
Q
if elevator ascending
A
w app= w real + m a
n-w=ma
16
Q
if elevator free fall
A
w app = 0
because mg - mg
w=mg-mg
17
Q
w app
A
n
18
Q
v another way
A
2pir/t
19
Q
a
A
delta omega/delta t
20
Q
I
A
mr2
21
Q
i for solid sphere
A
2/5mr2
22
Q
i for disc
A
1/2mr2
23
Q
kinetic energy
A
KE TOTAL = 1/2MV2 + 1/2Iomega2
24
Q
torque first rule
A
r x f
25
torque second rule
i x a
26
work
torq.theta
27
work second rule
1/2 i (wf2-wi2)
28
power of rotation
p=w.torq
29
L 2 laws
i x omega
| r x p
