.Sunday, February 8, 2009 ' 8:02 PM Y
What is Gravity?This is a recap of what i learnt:
There is a gravitational force acting between any two objects in the universe. There is a gravitational force between us and Earth. There is also a gravitational force between us and the Sun, between you and all the other planets, and between you and the people sitting next to you. Why do we fall down towards Earth rather than towards the Sun, another planet, or the people next to us?
The force of gravity between us and Earth is larger than the force from any of these other objects.
The force of gravity between two objects depends on the masses of the two objects and the distance between the centers of the two objects.
Therefore,
Weight = mass X gravitational acceleration
[N] [kg]
spring beambalance balance
On earth= 10 m/s² On Moon= 1.6 N/kg
OR
1.6 m/s^2
Example:Weight( earth ) = 40 kg = 400 N Weight( moon ) = 40 kg= 64 N
