Potential Energy Unit Math

Ke m v 2.

Potential energy unit math. M v 2 ke. Ke 1 2 m v2 or gpe mgh. The term potential energy was introduced by the 19th century scottish engineer and physicist william rankine although it has links to greek philosopher aristotle s concept of potentiality. At 1 m above the ground it s potential energy is.

V 2 2 ke m. The gravitational potential energy of an object equals its mass m times its height above the ground h times the acceleration due to earth s gravity g. Pe m g h. Potential energy is associated with forces that act on a.

1 foot pound is the amount of work that must be done to raise a 1 pound weight by 1 foot. Note that this energy can be positive or negati. Formula u 1 2 k x 2 for displacement x and some positive constant k depending on the material. So long as the force and motion are in the same direction the formula for work is w force distance f d the foot pound combines a unit of force a pound with a unit of distance a foot and is thereby a unit of work or energy.

Pe m x g x h mass. What about the units for energy. G pe m x h height. Solve for problems 9 16.

H pe m x g where m mass g acceleration of gravity h height gravitational acceleration of the earth is 9 8 m sec2. Well energy stored in springs or more precisely elastic potential energy. The most common energy unit in science is the joule. Gravitational potential energy mgh an object s mass is expressed in kilograms.

Electric potential energy between two electric charges formula u k q 1 q 2 r where q 1 and q 2 are the charge values r is the distance between them and k is coulomb s constant. You serve a volleyball with a mass of 2 1 kg. The ball leaves your hand with a. Ignoring air resistance which is small for this little drop anyway that pe gets converted into ke.

The unit for energy in the international system of units si is the joule which has the symbol j. M h g where. M pe g x h acceleration of gravity. Pe 0 98 kg m 2 s 2.

How is the gravitational potential energy of an object calculated. The relationship between gravitational potential energy and the mass and height of an object is described by the following equation. One joule is the amount of energy it would take to push with a force of 1 newton over a distance of 1 meter. Pe 0 1 kg 9 8 m s 2 1 m.

Speed of 30 m s.