Jakarta –
Gaya gravity is the force of attraction that occurs between objects in the universe.
The Earth we live in also has a gravitational force, which is commonly called the Earth’s gravitational force or Earth’s gravitational force. The existence of the earth’s gravitational force makes every object that falls must point downwards, precisely towards the center of the earth, as quoted from Inti Sari Super Smart RPAL SD Class IV-VI by Tina Susilowati, S.Pd.
Gravity cannot be seen, but its effects can be felt for life. Evidence of the existence of gravity can be found in everyday life.
Examples of the force of gravity in everyday life are apples falling from a tree to a bush under a tree, marbles rolling on a table and then falling to the floor, and balls thrown up will fall back to the ground.
The magnitude of the force of attraction of an object depends on the mass of the object. The weight of objects can be measured with a spring balance, quoted from the book Explore Physics Volume 1 for Class X SMA/MA by Supardi Seeds.
The existence of the Earth’s gravitational force causes all objects on the earth’s surface to always be pulled towards the center of the Earth. Therefore, the farther an object is from the center of the Earth, the less weight it has.
The speed of falling objects is also not the same between one object and another. This difference occurs because the motion of falling objects is influenced by the weight, shape, and size of the object.
Thus, the greater the mass or weight of an object, the greater its gravitational force. Conversely, the lighter the mass of an object, the slower the force of gravity pulls it down.
An example of this is the difference between the force of gravity on a stone and on cotton. A stone will fall faster than a lump of cotton because a stone is heavier than a lump of cotton.
The weight of the stone causes it to fall faster than the light cotton. The shape of cotton that also tends to widen results in greater air resistance than new. Because of this, the cotton falls slower than the stone.
Quoting a book Encyclopedia of Science: Breeding of Living Things, Water, Healthy Living, Force and Motion, Solar System by Sri Winarsih, the application of gravitational force in everyday life is as follows:
1. Freediving
The skydivers experience full gravitational acceleration for only a few moments after jumping from the plane. As they fall faster, the upward force of air resistance will continue to increase until finally it is equal and opposite to the downward attraction. As a result, the free fallers have a constant speed.
2. Spaceship
Spaceships that are circulating around the Earth will experience acceleration towards Earth due to gravitational forces. As a result, spaceship passengers feel that they are losing weight due to the influence of forces that can cause objects to fall.
After landing on the surface of the Moon, the astronauts also have no difficulty jumping high above the surface of the moon. This condition occurs because their muscles are used to a stronger gravitational force.
3. Keeping the Planet in the Orbit Track
The force of gravity is not only useful on Earth, but also useful in outer space. The force of gravity can hold the planets in orbit so that they always revolve around the Sun and satellites (moons) revolve around the planet. Without the gravitational force from the Sun, the planet will be thrown from its trajectory.
On the other hand, the sun’s gravity can keep people at a comfortable distance to see the warmth of the sun’s light. Not only that, the pull of the Moon’s gravity can also pull the sea towards it and cause sea tides, as quoted from the book Basic Physics Volume 2 by Aslam Chimimi Priawan Siregar.
That’s detikers, a series of examples of style gravity complete with explanation. Hopefully it can add to the insights of detikers!
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