Recent content by s-win

Just like that. I'm new to the website, what if I want to delete posts or adjust it to a different section?

3radii

10N/90N = 1/9th of the force 1/9 = 1/r^2

I'm kinda lost since I only learned this lesson in less than an hour and I have a test tomorrow so... I don't know what equation to use?

1. An object weighing 90 N on the Earth's surface would weigh only 10 N when its distance from the center of the Earth is ____? Do I solve for mass and try to find r? 2. An astronaut has a mass of 90 kg on the Earth's surface. If he moves to a height of 6 Earth radii above the...