At a given point above the surface of the Earth, the gravitational acceleration is equal to 5.4 m/s². Take the Earth mass M = 5.97x1024 kg and radius R = 6378 km. The altitude of this point, above the surface of the Earth, in km, is closest to: a. 6900 b. 2800 C. 4200 d. 5700 2200 e.

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32. At a given point above the surface of the Earth, the gravitational acceleration is equal to 5.4
m/s². Take the Earth mass M = 5.97x1024 kg and radius R = 6378 km. The altitude of this point,
above the surface of the Earth, in km, is closest to:
33. What does the scale read? (Hint: t = rxF)
a.
6900
b. 2800
C.
4200
d. 5700
e.
2200
a.
b.
C.
d.
a.
b.
C.
d.
e.
C.
34. A solid cylinder of 5 cm radius is positioned on a frictionless plane inclined at 30 degrees above horizontal.
A force F is exerted by a string wrapped around the spool. When F has a certain critical value the center
of mass of spool does not move. When this is the case, what is the angular acceleration of the spool?
(Hint: t = la)
0001 1910
a.
b.
e.
500 N
1000 N
2000 N
4000 N
392 rad/s²
340 rad/s²
260 rad/s²
196 rad/s²
98 rad/s²
Scale
30"
Massless rod
1000 N
4.05
138
35. Two buckets spin around in a horizontal circle on frictionless bearings. Suddenly, it starts to rain. As result,
The buckets speed up because the potential energy of the rain is transformed into kinetic energy.
The buckets continue to rotate at constant angular velocity because the rain is falling vertically
while the buckets move in a horizontal plane.
The buckets slow down because the angular momentum of the bucket + rain system is
conserved.
d. The buckets continue to rotate at constant angular velocity because the total mechanical energy
of the bucket + rain system is conserved.
None of the above.)
22
Transcribed Image Text:32. At a given point above the surface of the Earth, the gravitational acceleration is equal to 5.4 m/s². Take the Earth mass M = 5.97x1024 kg and radius R = 6378 km. The altitude of this point, above the surface of the Earth, in km, is closest to: 33. What does the scale read? (Hint: t = rxF) a. 6900 b. 2800 C. 4200 d. 5700 e. 2200 a. b. C. d. a. b. C. d. e. C. 34. A solid cylinder of 5 cm radius is positioned on a frictionless plane inclined at 30 degrees above horizontal. A force F is exerted by a string wrapped around the spool. When F has a certain critical value the center of mass of spool does not move. When this is the case, what is the angular acceleration of the spool? (Hint: t = la) 0001 1910 a. b. e. 500 N 1000 N 2000 N 4000 N 392 rad/s² 340 rad/s² 260 rad/s² 196 rad/s² 98 rad/s² Scale 30" Massless rod 1000 N 4.05 138 35. Two buckets spin around in a horizontal circle on frictionless bearings. Suddenly, it starts to rain. As result, The buckets speed up because the potential energy of the rain is transformed into kinetic energy. The buckets continue to rotate at constant angular velocity because the rain is falling vertically while the buckets move in a horizontal plane. The buckets slow down because the angular momentum of the bucket + rain system is conserved. d. The buckets continue to rotate at constant angular velocity because the total mechanical energy of the bucket + rain system is conserved. None of the above.) 22
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