Weight of an object varies place to place on the earth why
Answers
A person can weigh differently at various place on Earth because of the fluctuations in Earth's gravity, according to a new high-resolution map.
Gravity is often assumed to be the same everywhere on Earth, but it varies because the planet is not perfectly spherical or uniformly dense, researchers said.
Earth's gravity is weaker at the equator due to centrifugal forces produced by the planet's rotation. It's also weaker at higher altitudes, further from the planet's centre, 'NewScientist' reported.
Researchers led by Christian Hirt of Curtin University in Australiacombined gravity data from satellites and topographic data to map gravity changes between latitudes 60 degree north and 60 degree south, covering 80 per cent of Earth's land masses.
The map consists of more than 3 billion points, with a resolution of about 250 metres. Computing gravity would take 5 seconds per point on an ordinary computer, however, researchers used a supercomputer.
Researchers found the model pinpoints more extreme differences in gravitational acceleration than previously seen.
Hirt's model revealed unexpected locations with more extreme differences in acceleration due to gravity.
Researchers said Mount Nevado Huascaran in Peru has the lowest gravitational acceleration, at 9.7639 m/s2, while the highest is at the surface of the Arctic Ocean, at 9.8337 m/s2.
"Nevado was a bit surprising because it is about 1000 kilometres south of the equator. The increase in gravity away from the equator is more than compensated by the effect of the mountain's height and local anomalies," said Hirt.
These differences in gravity mean that in the unlikely event that you found yourself falling from a height of 100 metres at each point, you would hit the surface in Peru about 16 milliseconds later than in the Arctic Ocean, the report said.
That means you would also lose one per cent of your body weight in moving from the Arctic Ocean to the Peruvian mountaintop, although
Answer:
The weight of an object varies place to place on the earth because of the Earth's gravity varies from place to place ..
Explanation:
the Earth has an average
gravitational force, different locations on
Earth have gravitational forces that are larger
or smaller than average. This is because each
location has more or less mass than the average.
Gravity is a physical force of attraction between
objects. Objects with a small mass have a weak
gravitational force while those with a large mass
have a strong force.
You are held down to the Earth’s surface
because it has a strong gravitational force. You
actually exert a gravitational force on the Earth,
but because your mass is many times smaller
than the Earth’s mass, your pull is much less
than the Earth’s.
Gravity is measured as how fast objects
accelerate towards each other. The average
gravitational pull of the Earth is 9.8 meters per
second squared (m/s2 ).
The Earth is made of different substances like
air, rock, and water. These substances have a
different amount of mass in a certain amount of
space (density). For example, rock has a higher
density than air.