Gravitational Near Earth Surface.

In summary, Gravitational Near Earth Surface is the force of gravity that acts on objects near the Earth's surface, pulling them towards the center of the Earth. It is calculated using the formula F = G(m1m2)/r^2 and has a value of approximately 9.8 m/s^2 on Earth, also known as the acceleration due to gravity. This force affects objects by causing them to fall towards the Earth's surface and keeping them in orbit. While there may be slight variations in different locations on Earth, they are not noticeable to humans.
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Homework Statement



Certain neutron stars (extremely dense stars) are believed to be rotating at about 1000 rev/s. If such a star has a radius of 7 km, what must be its minimum mass so that material on its surface remains in place during the rapid rotation?

Homework Equations



cramster-equation-201031601226340429448270400007570.gif




The Attempt at a Solution



(7x10^3)(1000*2pi)/6.67*10^-11= 2.0301495

I'm getting it wrong. Any hints why?
 
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  • #2
You forgot to cube the value of R.

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FAQ: Gravitational Near Earth Surface.

What is Gravitational Near Earth Surface?

Gravitational Near Earth Surface is the force of gravity that acts on objects near the Earth's surface. It is the force that pulls objects towards the center of the Earth.

How is Gravitational Near Earth Surface calculated?

Gravitational Near Earth Surface is calculated using the formula F = G(m1m2)/r^2, where F is the force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between the two objects.

What is the value of the Gravitational Near Earth Surface on Earth?

The value of the Gravitational Near Earth Surface on Earth is approximately 9.8 m/s^2. This is also known as the acceleration due to gravity.

How does the Gravitational Near Earth Surface affect objects on Earth?

The Gravitational Near Earth Surface causes objects to fall towards the Earth's surface with an acceleration of 9.8 m/s^2. It also keeps objects in orbit around the Earth.

Can the Gravitational Near Earth Surface be stronger or weaker in different locations on Earth?

Yes, the Gravitational Near Earth Surface can be slightly stronger or weaker in different locations on Earth due to variations in the Earth's mass and shape. However, these differences are very small and not noticeable to humans.

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