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AP® Physics 1 & 2

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Weight and Mass: On Earth versus in Orbit

APPH12-TJGPFJ

The International Space Station (ISS) orbits Earth at an altitude of $411 \text{ km}$.

Assume the following:

  • $m_{on Earth}$ is the mass of the ISS if it was on Earth's surface
  • $m_{orbit}$ is the mass of the ISS while it is in orbit
  • $W_{on Earth}$ is the force Earth would exert on the ISS if it were on Earth's surface and
  • $W_{orbit}$ is the force Earth exerts on the ISS while it is in orbit

Which of the following relationships are true? Select TWO answers.

A

$m_{on Earth}$ > $m_{orbit}$

B

$m_{on Earth}$ = $m_{orbit}$

C

$W_{on Earth}$ >$W_{orbit}$

D

$W_{on Earth}$ <$W_{orbit}$