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AP Physics 1
2.6 Gravitational Force
BeginnerMCQConceptual24.3k
A graph of gravitational force F_g on the vertical axis versus distance r on the horizontal axis. The curve starts at a point (R, F_0) and follows a concave-up decreasing path. At r = 2R, the curve is significantly lower than F_0, specifically at one-fourth the height of F_0. The axes are labeled with F_g and r, and grid lines clearly show the vertical value at r = 2R is one-fourth of the value at r = R.
Magnitude of gravitational force vs. distance from the planet's center.
A space probe of mass \(m\) is launched from the surface of a planet of mass \(M\) and radius \(R\). The graph below shows the magnitude of the gravitational force \(F_g\) exerted by the planet on the probe as a function of the distance \(r\) from the planet's center. When the probe is at a distance \(r = R\), the gravitational force has a magnitude of \(F_0\). Which of the following correctly describes the magnitude of the gravitational force when the probe reaches a distance \(r = 2R\)?

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