If an astronaut landed on a planet of the same radius as Earth but 4 times the mass, then the astronaut's weight on the planet would be
A) 16 times her weight on Earth.
B) 4 times her weight on Earth.
C) the same as on Earth because weight is independent of location.
D) twice her weight on Earth.

Question

Quizplus · Accepted Answer

Weight is directly proportional to the mass of the planet. If the mass of the planet is 4 times that of Earth, the astronaut's weight would also increase by a factor of 4, assuming the radius of the planet is the same as Earth's.

If an Astronaut Landed on a Planet of the Same