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oportela23
21.01.2022 •
Physics
A spacecraft begins at a distance of 8.42km above an asteroid's surface with an outward velocity of 5040. (the asteroid's gravity is negliable; onboar rockets provide all acceleration here. That gravity does define the "down" in this problem) * assuming constant acceleration, what acceleration is needed for the maximum height of the spacecraft 12.20km?
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Ответ:
56.25 N
Explanation:
Given,
Radius of the planet, r = 1000 km
Gravitational force, F = 100 N
Initial distance from the planet, d = 500 km
Final distance from the planet, D = 1000 km
Lets assume, mass of planet = M
mass of the object = m.
As per the gravitational law, the force due to gravity is given as
where, G = gravitational constant
R = distance between the two objects.
Case 1: when the object is at a distance of 500 km from the planet,
Here, R = 1000 + 500 = 1500 km, so
Case 2: when the object is at a distance of 1000 km from the planet, so
now, R = 1000 + 1000 = 2000 km
Now the gravitational force, F' will be
Thus, the gravitational force will now be reduced to 56.25 N.