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Physics
Physics
Problem
Identify which type of mass is used (a) in Newton’s second law
F
=
m
a
F = ma
F
=
ma
and (b) in Newton’s law of universal gravitation
F
=
G
M
m
/
r
2
F = G M m / r^{2}
F
=
GM
m
/
r
2
.
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