upasana nayak

WELCOME

WORK AND ENERGY

PRESENT BY:-UPASANA NAYAK

Work is done whenever a

force acts on a body and the body moves in the direction of

force

WORK

The capacity to do work is

called energy

WIND ENERG

Y

GEOTHERMAL ENERGY

LIGHT ENERGY

NUCLEAR ENERGY

ELECTRICAL

ENERGY

SOUND ENERGY

TIDAL ENERGY

SOLAR ENERGY

HEAT ENERGY

James prescott joule

James prescott joule was an outstanding British physicist. He is

best known for his research in electricity and thermodynamics.

Amongst other things, he formulated a law for the heating effect of electric current. He also verified experimentally the law of

conservation of energy and discovered the value of the

mechanical equivalent of heat. The unit of energy and work called

joule, is named after him.

Law of conservation of energy

According to the law of conservation -energy can only be transformed from one form to another , it can neither be created nor destroyed .

The total energy before and after the transformation always remains constant.

THANK YOU