Custom Search
Universal Gravitational Law
Gravitational attraction of two objects depends upon mass of objects and the distance between them
Sponsored Links
The gravitational attraction of two objects depends upon the mass of each object and the distance between them. This relationship is called the Gravitational Law and can be expressed as
F = kG m1 m2 / r2 (1)
where
F = gravitational force (N, lbf)
kG = universal gravitation constant = 6.668 10-11 (Nm2/kg2)
m = mass of object (kg)
r = distance between objects (m)
Example - The gravitational force on a person on earth's surface
The gravitational force (weight) on a person of 70 kg on the earth's surface (6.37 106 m from the earth's center) can be expressed as
F = (6.668 10-11 Nm2/kg2) (5.98 1024 kg) (70 kg) / (6.37 106 m)2
= 688.1 (N)
- 5.98 1024 (kg) = mass of earth
Sponsored Links
Related Topics
- Dynamics - Dynamics Motion - velocity and acceleration
- Mechanics - Kinematics, forces, vectors, motion, momentum, energy and the dynamics of objects
Sponsored Links
Related Documents
- Acceleration of Gravity and Newton's Second Law - Acceleration of gravity and Newton's Second Law - SI and Imperial units
