Tips and tricks

Why is gravity not a real force?

Why is gravity not a real 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. In the same way, the straight path of an object is bent when space and time is bent.

Is gravity is a real 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 masses moving along geodesic lines in a curved spacetime caused by the uneven distribution of mass.

Which of the following is the fictitious force?

Centrifugal force is fictitious which is equal to the centripetal force in magnitude and acts away from the centre. (c) Frictional force (d) magnetic force. Which of the following are non-contact forces? Magnetic force, Frictional force, Gravitational force, Electrostatic force.

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Why is centrifugal force is fictitious?

We say fictitious because the actual source of the centrifugal acceleration is somewhat indirect and the experience one has results from the unbalanced forces acting on the reference frame, not a force. Note, it is an acceleration not a force. For instance, imagine yourself on a swing.

How can gravity be simulated in an orbiting space station?

When the station spins, centrifugal force acts to pull the inhabitants to the outside. This process could be used to simulate gravity. By adjusting certain parameters of a space station such as the radius and rotation rate, you can create a force on the outside walls that equals the force of gravity.

How does gravity affect inertia?

Mass is experienced to have two intrinsic properties: inertia (resistance to acceleration) and gravity (attraction to other masses). The gravitational interaction of all masses in a finite static universe model is shown to create a finite resistance to acceleration, which is inertia.