Friday

January 30, 2015

January 30, 2015

Posted by **Anya** on Tuesday, December 16, 2008 at 7:10pm.

and show that if a body is to escape the gravitational influence of the planet, it must be launched from the surface of the planet with a minimum speed, v = (8 pi GR^2 p/3) ^1/2 ..where G is grav. const, and p is the density of the planet

- Physics -
**bobpursley**, Tuesday, December 16, 2008 at 7:49pmPE= GMm/r ....see the law of gravitation.

1/2 mv^2=GMm/r

remember that density=M/(4/3 PI r^3)

**Answer this Question**

**Related Questions**

A physics question - I was researching amusement park rides for a recent project...

Physics - A round body of mass M, radius R, and moment of inertia I= BMR^2 is ...

Physics - A round body of mass M, radius R, and moment of inertia I= BMR^2 is ...

Physics - A round body of mass M, radius R, and moment of inertia I= BMR^2 is ...

Physics/Math - Zero, a hypothetical planet, has a mass of 1.0 1023 kg, a radius ...

Physics - Consider the gravitational potential, kinetic, and total mechanical ...

Physics - Zero, a hypothetical planet, has a mass of 1.0x10^23 kg, a radius of 3...

Physics Question......many thanks - A projectile is shot directly away from ...

Physics - two point masses are located in the same plane. the distance from mass...

physics - So I'm doing a lab about simple harmonic information and I have to ...