Work Energy And Power Formulas

The output power of a motor is the product of the torque that the motor generates and the angular velocity of its output shaft.

Work energy and power formulas. Work a force applied over a distance. Work formula example of work types of energy power formula questions. Power is a scalar quantity. The three main equations representing the relationships between energy work and force.

Intro music atribution title. The kinetic energy of an object can be related to its mass and velocity with the formula this formula for kinetic energy can be found from the equation for work if the force is in the same direction as the object s displacement. Andersen defines the terms energy work and power. Work done is generally referred in relation to the force applied while energy is used in reference to other factors such as heat.

Ek 1 2mv m is the mass v is the velocity work power energy exams and solutions. Joule the units of work equivalent to a newton meter. See definition of total mechanical energy. X k is the spring constant and x is the amount of compression or streching kinetic energy.

Problem set overview this set of 32 problems targets your ability to use equations related to work and power to calculate the kinetic potential and total mechanical energy and to use the work energy relationship in order to determine the final speed stopping distance or final height of an object. The work energy principles discussed here are identical to electric work energy principles. In older works power is sometimes called activity. In physics power is the amount of energy transferred or converted per unit time.

The unit of kinetic energy is the same as the unit of work the joule j. According to the work energy principle an increase in a rigid body s kinetic energy is caused by an equal amount of work done on that body by a force applied to that body. Mathematically it is computed using the following equation. H m is the mass g is the gravitational acceleration and h is the distance potential energy of the spring.

Power is the rate at which work is done. Work and energy in physics share a close relationship. In this article we will learn all about the concept of work power and energy. For formulas see work done by a constant force parallel to displacement and work done by any constant force and work done by a position dependent force.

These formulas show that work is the energy associated with the action of a force so work subsequently possesses the physical dimensions and units of energy. He also uses a simple example to calculate both work and power. This formula depends on the kinematic. The standard metric unit of power is the watt.

As is implied by the equation for power a unit of power is equivalent to a unit of work divided by a unit of time. It is the work time ratio. Work energy and power. Power work done per unit time.

Also units of energy.