Physics 21.3 Newton's Law of Gravitation Flashcards
1
Q
What is Newton’s Law of gravitation?
A
Newton’s law of gravitation states that the force of attraction betqween two point masses is directly proportional to the product of their masses and inversely proportional to the square of the distance between them
2
Q
What is the equation linked to Newton’s law of gravitation?
A
F=((Gm1m2)/r^2)
- F is the magnitude of the attractive force in Newtons [N]
- G is the gravitational constant in [N m^2 kg^-2]
- m1 is the mass of the first object in kilograms [kg]
- m2 is the mass of the second object in kilograms [kg]
- r is the distance between the centres of the two masses in metres [m]
3
Q
What is the value of the gravitational constant, G?
A
G= 6.67 * 10^-11 N m^2 kg^-2
