Calculate the force of gravity on a spacecraft 6400 km (1 earth radii) above the Earth's surface if its mass is 1600 kg.

G(Me*ms)/(2*radearth)^2

or, since you know its mass, on earth the weight would be

mg, but double the distance, and it is mg/4

To calculate the force of gravity on a spacecraft, you can use the formula for gravitational force:

F = (G * m1 * m2) / r^2

Where:
F is the force of gravity
G is the gravitational constant (6.67430 x 10^-11 N(m^2)/kg^2)
m1 is the mass of the spacecraft
m2 is the mass of the Earth
r is the distance between the center of the Earth and the spacecraft

In this case, the mass of the spacecraft is given as 1600 kg, and the distance between the spacecraft and the Earth's surface is 6400 km (1 Earth radius). We need to convert this distance to meters by multiplying it by 1000:

r = 6400 km * 1000 = 6,400,000 meters

Next, we need to calculate the mass of the Earth. The mass of the Earth is approximately 5.972 × 10^24 kg.

Now we can substitute these values into the formula:

F = (6.67430 x 10^-11 N(m^2)/kg^2) * (1600 kg) * (5.972 × 10^24 kg) / (6,400,000 meters)^2

Simplifying this expression will give us the answer.