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Gravitational Field Quiz
New Problems
reloads the page with new variable values in all questions. You must do this after grading the test to rework it another time.
Make sure to enter your answers in the specified units .
1
What is the gravitational field (in N/kg) Earth radii above the Earth's surface?
2
What is the gravitational field (in N/kg) km above a planet with a mass of x 10
22
kg and a radius of x 10
6
m?
3
An astronaut standing on the surface of the moon launches a projectile straight up from the surface. What should the initial speed (in m/s) of the projectile be so that it will reach a height of x 10
6
m above the moon's surface? (The moon's mass is 7.35 x 10
22
kg and its radius is 1.74 x 10
6
m.)
4
What is the escape velocity (in m/s) from a planet with a radius of x 10
6
m and a mass of x 10
22
kg?
5
How much work (in kJ) is done lifting a kg payload from the Earth's surface to a height of m above the Earth's surface? (The mass of the Earth is 5.98 x 10
24
kg and the Earth's radius is 6.38 x 10
6
m.)
6
How much work (in MJ) is done to raise a kg payload from Earth's surface to a height of x 10
6
m above the Earth's surface? (The mass of the Earth is 5.98 x 10
24
kg and the Earth's radius is 6.38 x 10
6
m.)
Once you have submitted your answers for grading by clicking the grade button, you
cannot resubmit answers
for the same Problem Set--you must use the 'New Problems' button first.
