Public School, Deer Creek Minnesota, 1918 LakesnWoods.com Postcard and Postcard Image Collection - click image to enlarge Aerial view, Deer Creek Minnesota, 1972
Whenever work is done upon an object by an external force, there will be a change in the total mechanical energy of the object. If only internal forces are doing work (no work done by external forces), there is no change in total mechanical energy; the total mechanical energy is said to be conserved.
Balanced Forces: Balanced Forces: When the net force of an object is 0 N! Balanced and Unbalanced Forces: Check us out at www.tutorvista.com A force is a push or a pull. A force can give energy to an object causing the object to start moving, stop moving, or change its motion.