Physics card law of gravitation Flashcards
(16 cards)
What does Newton’s Law of Universal Gravitation state?
Every object with mass pulls on every other object with mass.
What is the formula for Newton’s Law of Gravitation?
F = G * (m1 * m2) / r^2
What does “G” stand for in the formula?
G is the gravitational constant: 6.674 x 10^-11
What happens to gravity when mass increases?
The force of gravity gets stronger.
What happens to gravity when distance increases?
The force of gravity gets weaker.
Why don’t you feel gravity from small things like chairs?
Their mass is too small to make a noticeable force.
If you double the mass of one object, what happens to gravity?
The force of gravity doubles.
If you double the distance between objects, what happens to gravity?
Gravity becomes four times weaker (since r^2 means r * r).
Why do astronauts weigh less on the Moon?
The Moon has less mass than Earth, so it pulls less.
Why does Earth have stronger gravity than the Moon?
Earth has more mass.
Why do tides happen on Earth?
The Moon’s gravity pulls on Earth’s oceans.
Why do satellites stay in orbit?
Earth’s gravity pulls them toward it, balancing their motion.
What would happen if Earth had 10 times more gravity?
We’d be crushed under our own weight.
Could humans live on a planet with half Earth’s gravity?
Possibly, but our muscles and bones would weaken over time.
How could you create artificial gravity in a spaceship?
Use spinning or acceleration to mimic gravity.
How could you use gravity in a sci-fi story?
Make gravity different on other planets to affect characters or plot.
