Which of the following factors does the gravitational potential energy of an object near Earth's surface depend on ($U=mgh$)?

For a simple pendulum swinging back and forth, at which point(s) does the pendulum bob have the greatest gravitational potential energy?

A pendulum has a gravitational potential energy of $100 J$. At which position is this potential energy most likely to be found?

Which of the following expressions gives the gravitational potential energy of the Earth-Sun system, where $M$ is the mass of the Sun, $m$ is the mass of the Earth, $G$ is the universal gravitational constant, and $r$ is the distance between their centers?

According to the standard reference point where the ground is chosen as zero height, what is the gravitational potential energy of an object resting on the ground?

A hiker of mass $m$ climbs from the base to the top of a hill of height $h$. By how much does his gravitational potential energy change during this climb? (Assume acceleration due to gravity is $g$.)

In the context of gravitational potential energy, is it possible for a system to have negative potential energy?

Which of the following variables determine the gravitational potential energy of an object near Earth's surface?