When work is done on an object the amount of blank it has changed

01.08.2018 | by Delta
For work to be done on an object, the object must move in the same direction as the force. Or, the force can act against the motion. For example if you lift something off the ground you have applied a force through a distance in the same direction as the force.

How can I work out the original amount of energy in an object using it's current energy, height and weight.

If you drop the box then gravity does work because the force of gravity will apply a force through a distance in the same direction. Having trouble with your homework. This is because centripetal force is always perpendicular to velocity and only components of force parallel to the object can do work on it. I'm getting an error after updating a procedure and executing it.
Just because there is force, doesn't mean work has been done. Forces can act when objects touch. Connect your Kindle to your computer. By lifting the box you have given it gravitational potential energy mgh. Basically if the energy of the object has changed. The force can act in the same direction of motion. Answer quality is ensured by our experts.