By Newton's universal law of gravitation the free-fall acceleration a of a body, such as the satellite shown in the figure, falling a great distance to the surface is not the constant g. Rather, the acceleration a is inversely proportional to the square of the distance from the center of the Earth, a = k/r2, where k is the constant of proportionality. Use the fact that at the surface of the Earth r = R and a = g to determine k. If the positive direction is upward, use Newton's second law and his universal law of gravitation to find k = differential equation for the distance r. dt2 satellite of mass m surface

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Chapter1: Units, Trigonometry. And Vectors
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By Newton's universal law of gravitation the free-fall acceleration a of a body, such as the satellite shown in the figure, falling a great distance to the surface is not the constant g. Rather, the
acceleration a is inversely proportional to the square of the distance from the center of the Earth, a = k/r2, where k is the constant of proportionality. Use the fact that at the surface of the Earth
r = R and a = g to determine k. If the positive direction is upward, use Newton's second law and his universal law of gravitation to find a differential equation for the distance r.
k =
d?r
dt2
satellite of
mass m
surface
Earth of mass M
Transcribed Image Text:By Newton's universal law of gravitation the free-fall acceleration a of a body, such as the satellite shown in the figure, falling a great distance to the surface is not the constant g. Rather, the acceleration a is inversely proportional to the square of the distance from the center of the Earth, a = k/r2, where k is the constant of proportionality. Use the fact that at the surface of the Earth r = R and a = g to determine k. If the positive direction is upward, use Newton's second law and his universal law of gravitation to find a differential equation for the distance r. k = d?r dt2 satellite of mass m surface Earth of mass M
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