Work Energy And Power Formulas

Power is a scalar quantity.

Work energy and power formulas.

Also units of energy. The standard metric unit of power is the watt. 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 formula example of work types of energy power formula questions.

The unit of kinetic energy is the same as the unit of work the joule j. Power is the rate at which work is done. 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. Ek 1 2mv m is the mass v is the velocity work power energy exams and solutions.

H m is the mass g is the gravitational acceleration and h is the distance potential energy of the spring. In older works power is sometimes called activity. Joule the units of work equivalent to a newton meter. In this article we will learn all about the concept of work power and energy.

Andersen defines the terms energy work and power. Power work done per unit time. It is the work time ratio. X k is the spring constant and x is the amount of compression or streching kinetic energy.

Work energy and power. In the international system of units the unit of power is the watt equal to one joule per second. Power work time or p w t. In physics power is the amount of energy transferred or converted per unit time.

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. 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. Work and energy in physics share a close relationship. Mathematically it is computed using the following equation.

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. Power is defined as work done per unit time. He also uses a simple example to calculate both 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.

Intro music atribution title. See definition of total mechanical energy. The three main equations representing the relationships between energy work and force. This formula depends on the kinematic.

Work a force applied over a distance.