6.39.
Model:
Represent the rocket as a particle that follows Newton’s second law.
Visualize:
Solve: (a)
The
y
component of Newton’s second law is
()
5
net
22
thrust
3.0 10 N
9.80 m/s
5.2 m/s
20,000 kg
y
y
F
Fm
g
aa
mm
−×
==
=
=
−
=
(b)
At 5000 m the acceleration has increased because the rocket mass has decreased. Solving the equation of part
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This note was uploaded on 12/10/2011 for the course PHYS 1211 taught by Professor Geller during the Fall '09 term at UGA.
 Fall '09
 geller

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