Pluto may be considered small in planet terms, but its still a pretty big rock, and its moon is small enough so that they can have a mutual gravitational attraction, and the moon can be in a stable orbit. Pluto can have gravity on it, anything that's bigger than something else has gravity on it, even an elephant has gravity over a mouse, its just too small of an amount to do anything
Stronger
Pluto has a weaker gravity than Earth. In fact, Pluto has a weaker gravity than Earth's moon.
Yes - in fact, anything that has mass will exert a gravitational force (including comparably small objects, like a human being). Pluto's force of gravity is equal to 0.58m/s2, which is about 6% that of the gravity on Earth.
Pluto's force of gravity is equal to 0.58m/s2, whereas the force of gravity on Earth is 9.81m/s2. Thus, the gravity on Pluto is about 6% that of the gravity on Earth.
They orbit about their mutual center of gravity, which is in between the two because they have similar mass. Other planets have the center of gravity inside them.
gravity on Pluto is about 1/12th the surface gravity on Earth
Stronger
Pluto has a weaker gravity than Earth. In fact, Pluto has a weaker gravity than Earth's moon.
No. The gravity of Pluto is only about 6.3% of the gravity on Earth, less than half of the gravity on the moon. This is because Pluto is about 500 times less massive than Earth.
our moon or mercury or Pluto
Moon
The Moon does have gravity! It is weak (just 1/6th of the Earth's) so the Moon has very little atmosphere.
The moon's gravity is too weak to hold on to an atmosphere.
Compared to earth, the force of gravity on pluto is weak, about 1/17 th that of earth, so 100 kg mass on pluto would "weigh" 100/17 = 5.9 kg
Yes - in fact, anything that has mass will exert a gravitational force (including comparably small objects, like a human being). Pluto's force of gravity is equal to 0.58m/s2, which is about 6% that of the gravity on Earth.
Any object in space with enough gravity to keep a moon in orbit can have moons. Pluto is one of those objects.
A good bit of "luck", and the fact that Pluto is so far from the Sun; the Sun's gravity interferes very little with the weak gravity of tiny Pluto, and its even smaller moons.