Newtons law of gravitation
W=mg
g=9.81 or 32.2
Law of Sines:
=
Law of Cosines:
Rectangular Components of a Vector (F)
Fx=Fcos Q, Q=angle of F with x axis
Fy=FsinQ
R=
Moment of a force (F) about a point (A)
M=F.d, d is measured from point A perpendicular t
PRACTICE EXAM II
COLLEGE PHYSICS II
FALL SEMESTER 2013
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ke = 1/(40) = 8.99 x 109 N m2/C2
0 = 8.85 x 10-12 C2/N m2
e = 1.60 x 10-19 C
me = 9.11 x 10-31 kg
mp = 1.67 x 10
Centroids of Common Shapes of Areas and Lines
Shape
11 [9h
T ' 1 a _
nangu ar area 3 2
41 7712
rt _ . l _
Qua er c1rcu ar area 3 4
- - 4r 7T12
SemICIrcular area
377 2
3h 2 h
Semiparabolic area _a
5 3
3h 40h
. O r _