Why does a body becomes weightless at the Centre of Earth?

Solution : As the distance from centre of earth decreases, acceleration due to gravity decreases and at the centre of earth it becomes zero.

How short would a day be so that a person on the equator would feel weightless?

The answer to the question is: If the Earth rotated about 17 times faster than it currently does, equator inhabitants would be weightless indeed. A day-night-cycle would last only 1.4 hours instead of the familiar 24 hours – in other words: 1 hour and 24 minutes.

In which conditions does the body become weightless?

A body becomes weightless in a zero-gravity scenario and when a force is applied to a body that is equal and opposite to the force of gravity. If the body is falling only under the influence of gravity.

Why is a body weightless?

They are weightless because there is no external contact force pushing or pulling upon their body. In each case, gravity is the only force acting upon their body. Being an action-at-a-distance force, it cannot be felt and therefore would not provide any sensation of their weight.

What is the weight of a particle at the Centre of the earth?

The weight of a particle at the center of the Earth is zero.

What if Earth spun twice as fast?

At 100 mph faster, the equator would start to drown. If we double the speed at the equator, so that Earth spins 1,000 miles faster, “it would clearly be a disaster,” says Fraczek. The centrifugal force would pull hundreds of feet of water toward the Earth’s waistline.

What is weightlessness Class 9?

Weightlessness is a condition when your body is in free fall and the acceleration is downward at gravity. This condition can be defined by the term zero gravity. So weightlessness occurs when there is zero support of force on our body.

Can there be zero gravity on Earth?

Zero gravity on earth is 0 m/s2. It is vertically opposite to the apparent gravitational force i.e. directly opposite to the gravitational pull. It is the highest point on the sphere and thus, the farthest up from the gravitational force.

Where the acceleration due to gravity is maximum?

The value of acceleration due to gravity is maximum at the pole of the Earth.

Does escape velocity change with altitude?

Escape velocity decreases with altitude and is equal to the square root of 2 (or about 1.414) times the velocity necessary to maintain a circular orbit at the same altitude. At the surface of the Earth, if atmospheric resistance could be disregarded, escape velocity would be about 11.2 km (6.96 miles) per second.