View Full Version : Work done by gravity
KaeCiiii
Apr 5, 2009, 06:00 PM
What is the equation for work done by gravity for an object dropped to the ground?
Perito
Apr 5, 2009, 08:12 PM
Work = MGH where
M is the mass
G is the acceleration due to gravity
H is the height
Unknown008
Apr 7, 2009, 12:54 AM
If you didn't know that formula, you can go from the basic formula;
Work = Force x distance
What is force? Force is mass x acceleration.
Therefore, work = mass x acceleration x distance
where the mass is the mass of the object, acceleration is the acceleration due to gravity and distance is the height from which the object was dropped.
Unknown008
Apr 8, 2009, 01:55 AM
Yes, helpinhere, it's just that we can never be sure at what level of education the OP is. I prefer mention acceleration due to gravity since early classes use 10m/s^2 for the sake of simplicity and later 9.8m/s^2. Thanks for the greenie both of you! :)