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Phys171 – Fri 4/5
Reminder HW 11 was due this morning
(please come see me after class if you forgot
and I will give an extension until Sun)
HW 12 DUE April 13
HW 13 DUE April 20 – THIS IS LONG
FINAL EXAM:
PHY 0405 Fri, May 18 8:00 am - 10:00 am
Newtons Law of Universal Gravitation
Force magnitude:
G Universal gravitational constant:
6.673 x 10-11 N⋅m2/ kg2
Note: For spherically symmetric objects, one can consider two
extended objects as point objects located at their center of
mass
Example: you on the earth surface. Can be modeled as two
point objects that are 6000km apart.
12
2
g
mm
FG
r
=
