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.
Unit 26 Types of Energy Energy can neither be created nor destroyed. Energy changes from one kind to another. The total energy of an object never changes. Anything that has mass and movement has kinetic energy.The kinetic energy of an object in this case is given by the relation: KE = (1/2)mv2 m=mass of the object V=velocity of the object The greater the mass or velocity of a moving object, the more kinetic energy it has.ind power uses mechanical energy to help create electricity. Potential energy + Kinetic energy = Mechanical energy Mechanical Energy Summary Gravitational PE Elastic PE The energy of motion mgh Energy that is stretched or compressed.