"Energy enables physical work to be done" What does this mean? It means that energy is a property a body has that helps it move against a force. Physical work is done when something moves against a force. This needs a transfer of energy to take place. e.g. work is done when we lift an object from a table onto a shelf. We are lifting the weight (a force) upwards. In this case energy is transfered from our arm to the object.
|