Tags » Newton's Law Of Universal Gravitation

How long would it take to fall through the center of the Earth?


We have a hole that leads straight through the center of the Earth. We neglect air resistance and assume that the Earth has uniform density ρ. 313 more words

Interesting Physics

What is the surface temperature of the planet?


A planet of radius r and mass M has a homogeneous atmosphere (density independent of height). The atmosphere has a height h and the atmosphere’s gas has a molar mass μ. 176 more words

Interesting Physics

While moving to Pluto would cause drastic "weight loss"...

…it won’t do a thing for your mass.

The science museum where I work (<3!) has a scale that displays how much you would weigh on various astronomical bodies. 254 more words

Physics