- #1
wcase
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Here is the question:
Consider a pulsar, a collapsed star of extremely high density, with a mass M equal to that of the Sun (1.98 × 1030 kg), a radius R of only 12.7 km, and a rotational period T of 0.0545 s. By what percentage does the free-fall acceleration g differ from the gravitational acceleration ag at the equator of this spherical star?
Just to make sure I am doing it right, I have the equations
ag=GM/R^2
g=ag-w2R
and when I plug in the values I get ag=8.1881*1017
g=8.18642*1011
From what I gather from my textbook, ag is the gravitational acceleration and g is the free-fall.
Now my predicament is that this is homework submitted online, I have a certain amount of submissions, and I only have one remaining.
So when I compare the percentages, should I do ag/g*100=1.0002*108%
or g/ag*100=.0001%
Thanks
Consider a pulsar, a collapsed star of extremely high density, with a mass M equal to that of the Sun (1.98 × 1030 kg), a radius R of only 12.7 km, and a rotational period T of 0.0545 s. By what percentage does the free-fall acceleration g differ from the gravitational acceleration ag at the equator of this spherical star?
Just to make sure I am doing it right, I have the equations
ag=GM/R^2
g=ag-w2R
and when I plug in the values I get ag=8.1881*1017
g=8.18642*1011
From what I gather from my textbook, ag is the gravitational acceleration and g is the free-fall.
Now my predicament is that this is homework submitted online, I have a certain amount of submissions, and I only have one remaining.
So when I compare the percentages, should I do ag/g*100=1.0002*108%
or g/ag*100=.0001%
Thanks