- What is an attractive force?
- What are the 4 forces?
- What are the 3 types of contact forces?
- Why is gravity so weird?
- Is gravity still considered a force?
- Can gravity be proven?
- What is the strongest force in the universe?
- Who invented gravity?
- What are the 7 forces?
- Why gravity is not a force?
- What type of force is gravity?
- Which force is always attractive?
- Can anything repel gravity?
- Is gravity a fundamental force?
- Why is gravity only an attractive force?
- Where is gravity strongest on earth?
- Can we explain gravity?
- Can we create gravity?
What is an attractive force?
attractive force – the force by which one object attracts another.
affinity – (immunology) the attraction between an antigen and an antibody.
bond, chemical bond – an electrical force linking atoms..
What are the 4 forces?
According to the present understanding, there are four fundamental interactions or forces: gravitation, electromagnetism, the weak interaction, and the strong interaction.
What are the 3 types of contact forces?
Contact forcesReaction force. An object at rest on a surface experiences reaction force . … Tension. An object that is being stretched experiences a tension force. … Friction. Two objects sliding past each other experience friction forces. … Air resistance. An object moving through the air experiences air resistance .
Why is gravity so weird?
2. Why is gravity so weird? No force is more familiar than gravity — it’s what keeps our feet on the ground, after all. And Einstein’s theory of general relativity gives a mathematical formulation for gravity, describing it as a “warping” of space.
Is gravity still considered a force?
In general relativity, gravity is not a force between masses. Instead gravity is an effect of the warping of space and time in the presence of mass. Without a force acting upon it, an object will move in a straight line. … This explains why all objects fall at the same rate.
Can gravity be proven?
What is the definitive proof there is gravity? There isn’t one. That is not how science works. Gravity is the name we give to the phenomenon that objects accelerate towards each other when they are otherwise left to their own devices.
What is the strongest force in the universe?
strong nuclear forceThey are the strong nuclear, the weak nuclear, electromagnetic, and gravitational forces. The strongest of these is the strong nuclear force, which is 100 times stronger than the electromagnetic force – the next strongest of the four forces.
Who invented gravity?
Sir Isaac NewtonSir Isaac Newton was an English mathematician and mathematician and physicist who lived from 1642-1727. The legend is that Newton discovered Gravity when he saw a falling apple while thinking about the forces of nature.
What are the 7 forces?
Action-at-a-Distance ForcesApplied Force.Gravitational Force.Normal Force.Frictional Force.Air Resistance Force.Tension Force.Spring Force.
Why gravity is not a force?
Gravity is most accurately described by the general theory of relativity (proposed by Albert Einstein in 1915), which describes gravity not as a force, but as a consequence of the curvature of spacetime caused by the uneven distribution of mass.
What type of force is gravity?
Gravity or gravitational forces are forces of attraction. … That pull is gravity at work. Every object in the universe that has mass exerts a gravitational pull, or force, on every other mass. The size of the pull depends on the masses of the objects.
Which force is always attractive?
Gravitational forceGravitational force is an attractive, fundamental force of the universe that is directly proportional to the mass of the two objects and inversely proportional to the distance between them.
Can anything repel gravity?
Unlike the Force, with its dark and light sides, gravity has no duality; it only attracts, never repels.
Is gravity a fundamental force?
Gravity is the only fundamental force that physicists can currently describe without using force-carrying particles.
Why is gravity only an attractive force?
Because mass is positive The force of gravity, FG is proportional to the product of the masses and inversely proportional to the distance, r, squared. … G is simply a bookkeeping constant that allows us to get the right answer for the force based on any choice of units for mass and distance.
Where is gravity strongest on earth?
In the case of the earth, the force of gravity is greatest on its surface and gradually decreases as you move away from its centre (as a square of the distance between the object and the center of the Earth).
Can we explain gravity?
Gravity is a force of attraction that exists between any two masses, any two bodies, any two particles. Gravity is not just the attraction between objects and the Earth. It is an attraction that exists between all objects, everywhere in the universe. … where G is called the Gravitational Constant.
Can we create gravity?
Artificial gravity can be created using a centripetal force. A centripetal force directed towards the center of the turn is required for any object to move in a circular path. In the context of a rotating space station it is the normal force provided by the spacecraft’s hull that acts as centripetal force.