Problema Solution
The weight of an object varies inversely as the square of the distance from the object to the center of the earth, whose radius is 4000 miles. If an astronaut weighs 145 pounds at a point 80 miles above the Earth's surface, how much does the astronaut weigh on Earth?
Answer provided by our tutors
80 miles 145 pounds
1 mile 145/80 pounds
4000 miles 145*4000 / 80 pounds
Which comes out to be 7250 pounds