The gravitational field caused by a planet or other body (such as the moon) can
ID: 1271565 • Letter: T
Question
The gravitational field caused by a planet or other body (such as the moon) can be calculated using: gfield2 G is the universal gravitational constant in Newton's law of gravity. M is the body's mass, and r is the distance from the center of the body to the location where g is calculated. If g is calculated near the surface, r is the radius of the object. Given: The mass of Venus is 486.8x1022 kg. The radius of Venus is 6.052x106 m. (a) What is the gravitational field strength near the surface of Venus? N/kg (b) If an astronaut on the surface of Venus tosses a wrench up in the air, it will have a downward acceleration of m/s2 while it is travelling up and down in freefall.
Explanation / Answer
a) field strength = GM/r^2 = (6.67*10^-11*486.8**10^22)/((6.052*10^6)^2) = 8.86 N/kg
b) g = 8.86 m/s^2
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