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AP® Physics 1 & 2

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Moderate

Dueling Planets

APPH12-DB1SEE

Assume a 1000 kg spacecraft is exactly at the midpoint (P) between two planets. Planet A is to the left of the spacecraft and has a gravitational field of 2N/kg at point P. Planet B is to the right of the spacecraft and has a gravitational field of 0.5 N/kg at point P. What is the magnitude of net force on the spacecraft due to the gravity of the two planets?

A

0 N, since the spacecraft is an equal distance from each planet.

B

2.5 N/kg

C

1.5 N/kg

D

1500N