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Gravity
One of the four fundamental interactions, gravity is responsible for the fact that any objects with mass attract one another. According to general relativity, it is a space time curvature, but according to quantum mechanics it is the result of exchanges of virtual gravitons.
4,784 Questions
Gravity is a constant force that acts upon objects with mass, causing them to be attracted to each other. While the strength of gravity can vary based on the mass of the objects and their distance apart, it is not considered a variable in itself.
What force would be required to pull a 10.0 kg wooden block at a constant velocity on Jupiter?
The force required to pull a 10.0 kg wooden block at a constant velocity on Jupiter would be determined by the gravitational force on Jupiter, which is approximately 24.79 m/s^2. Using the formula F = ma, where F is the force, m is the mass, and a is the acceleration due to gravity on Jupiter, the force required would be approximately 247.9 N.
What type of force holds a book on a sloped desk?
The force of gravity acting on the book pulls it downward, while the normal force exerted by the desk in the upward direction prevents the book from sliding down the sloped surface.
Yes, gravity is a natural force that causes objects with mass to be attracted to each other. It is responsible for holding the planets in their orbit around the sun and for keeping us anchored to the Earth.
What do you feel when you hold and object against the pull of gravity?
When you hold an object against the pull of gravity, you feel a sensation of weight in your hand due to the force required to counteract gravity. This feeling can vary depending on the mass of the object and the strength of the gravitational force acting on it.
How can you float if gravity is pushing you down?
You (or anything) can only float if the force of gravity pulling down is exactly balanced by some other force pushing up. In a fluid there's a force called buoyancy pushing up on anything in the fluid, the strength of which is equal to the weight of fluid 'displaced' (the fluid that would be in that space if the thing weren't there). The cool thing is that buoyancy is actually generated BY gravity acting on all the other fluid and is always in the opposite direction to gravity (up).
Imagine a table cloth held on by each corner above the ground. This is the universe. Put an apple on it. This is a planet. The apple makes a dent. This is gravity. Put grapes on the cloth. These are smaller planets. They are drawn to the apple. Put a soccer ball on the cloth. This is a very large planet. Everything moves towards it. Gravity.
What is acceleration due to garvity?
On earth . . . . 9.8 meters (32.1 feet) per second2
On the Moon . 1.6 meters (5.2 feet) per second2
On the sun 273.6 meters (897.6 feet) per second2
On Mercury . 3.7 meters (12.1 feet) per second2
On Venus . . 8.8 meters (28.9 feet) per second2
On Mars . . . 3.7 meters (12.1 feet) per second2
On Jupiter . 25.9 meters (85.0 feet) per second2
On Saturn . 11.2 meters ( 11.2 feet) per second2
On Uranus . . 9.0 meters ( 29.5 feet) per second2
On Neptune 11.3 meters (37.1 feet) per second2
On Pluto .. . . 0.58 meters (1.9 feet) per second2
No, gravity cannot be destroyed. It is a fundamental force of nature that governs the interaction between objects with mass and is constantly present in the universe. While its effects can be counteracted or masked in certain situations, gravity itself cannot be eliminated.
What forces balances the force of gravity on a hanging light?
The tension force in the string or support balances the force of gravity on a hanging light. This tension force is equal in magnitude and opposite in direction to the force of gravity acting on the light, keeping it in equilibrium.
What is a state of very weak gravity called?
A state of very weak gravity is called microgravity. In this condition, objects experience little to no gravitational force, typically encountered in outer space or during freefall.
What is the force of gravity on a 500N man stading on the earth's surface?
If the bathroom scale reads 500N when the man stands on it, then that's a clear
indication that the force of gravity between the man and the Earth is 500N.
That number is referred to as the man's "weight" on Earth. It's also the Earth's
weight on the man.
What is a specific gravity meter?
Known as a hygrometer. May be as simple as a few beads of differing specific gravity in a glass tube with a rubber bulb on top or a complex electronic device that determines specific gravity through measurement of other characteristics. A battery hygrometer uses floating beads to determine the charge of a lead acid battery because the specific gravity of the electrolyte will vary for a given state of charge.
How is gravity and aceleration important to physics?
Gravity and acceleration are fundamental concepts in physics that play a key role in understanding the motion of objects. Gravity is the force that attracts objects toward each other, influencing the trajectory of objects in free fall or orbit. Acceleration, which is the rate of change of velocity, describes how quickly an object's speed or direction changes, and is related to the forces acting upon the object according to Newton's second law. Together, gravity and acceleration help physicists describe and predict the motion of objects in various situations.
What 3 factors can change the force of gravity?
The force of gravity between any two objects depends on . . .
-- the mass of the first object
-- the mass of the second object
-- the distance between their centers of mass.
How did the law of gravity affect society?
The law of gravity has had a significant impact on society by enabling advancements in fields such as engineering, physics, and telecommunications. From the development of transportation systems to satellite technology, our understanding and application of gravity have shaped modern society in numerous ways. Additionally, the law of gravity has influenced societal values and beliefs, fostering a curiosity and appreciation for the natural world.
How come people dont get pulled into each other by gravity?
The simple answer is that gravity is actually an extremely weak force. A common fridge magnet can overcome the attraction of the entire Earth!
Gravity only becomes powerful for very heavy objects like planets and stars. Everyday objects as well as people are simply not massive enough to provide much of a force.
The reason why gravity (though weak) is the dominant force at long range is that gravity only adds to itself; adding more mass only makes it stronger and you cannot really stop gravity.
Compare this to the electromagnetic force; although it is much more powerful it acts on charges, and both positive and negative charges exist. Therefore you can stop the electromagnetic force by negating a charge by adding the opposite charge to it.
The Universe is largely electrically neutral, so long range electromagnetic forces do not appear.
Does gravity allow heat to rise?
No, gravity does not directly influence the movement of heat. Heat rises due to the process of convection, where hotter, less dense air or fluid moves upward and colder, denser air or fluid moves downward. Gravity helps maintain the stability of this convection process.
Does the area of a piece of paper affect the time taken for it to fall to the ground?
No, the area of the paper does not affect the time taken for it to fall to the ground. In a vacuum, objects of different sizes and shapes fall at the same rate due to gravity. However, in the presence of air resistance, larger surface areas like those of bigger papers might experience slightly more air resistance which could affect the fall time slightly.
This is a very good question! You might be fooled into thinking that the only thing we feel if we walk around is the normal force pushing upwards against our feet, but this is because we are so used to feeling the effect of gravity (because it is almost never absent) that we are not consciously aware of it.
You can check this by going into a rollercoaster or a fun fare attraction where there is a drop in free fall or even on a swing. In such situations you might feel a soft tingling in your stomach as your organs adjust to being in free fall.
Being in free fall actually means you are no longer feeling the effects of gravity. This might sound strange, after all you are falling because of gravity! But it is true. In fact, it is the thing that prompted Albert Einstein to formulate his theory of gravity.
And since we can feel the absence of gravity (the tingling of the stomach for example) we must also be able to feel gravity (or rather acceleration). It is just that we are so used to living with gravity and free fall situations are so rare that we think we do not feel gravity.
Can you give me an example of gravity?
Some of the effects of gravitational force:
-- dropping things
-- falling out of bed
-- falling down and going boom when you slip on the ice
-- throwing a baseball and watching it follow a parabolic path until it hits the ground
-- rain and snow heading to the ground when they come out of clouds
-- airplanes landing when the pilots back off the throttles
-- astronomical objects, like the Earth and space shuttle, orbiting other objects, like the sun
How much does the earth gravity cause an object to accelerate?
The acceleration due to gravity on Earth is approximately 9.81 meters per second squared. This means that for every second an object is in free fall near the surface of the Earth, its speed increases by 9.81 meters per second.
Does Earth exert a upward or downward force on your body?
Earth exerts a downward (towards the ground or Earth) force on your body. At the same time, your body exerts an upward (towards your body) force on the Earth. Your body is the one that seems to move, however, because the mass of your body is so much less than the mass of the Earth.
