Physics Formulas For Work Energy And Power

H m is the mass g is the gravitational acceleration and h is the distance potential energy of the spring.

Physics formulas for work energy and power.

It is the work time ratio. Work done is generally referred in relation to the force applied while energy is used in reference to other factors such as heat. 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. Ek 1 2mv m is the mass v is the velocity work power energy exams and solutions.

If under a constant force f the object is displaced through a distance s then work done by the force. Work energy and power. Power is the rate at which work is done. Mathematically it is computed using the following equation.

X k is the spring constant and x is the amount of compression or streching kinetic energy. This formula depends on the kinematic formula the change in position x x 0 is equal to the displacement. The time integral of this scalar equation yields work from the instantaneous power and kinetic energy from the scalar product of velocity and acceleration. 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.

The standard metric unit of power is the watt. In this article we will learn all about the concept of work power and energy. Power is a scalar quantity. In physics power is the amount of energy transferred or converted per unit time.

Power is defined as work done per unit time. In physics work is the process of energy transfer to the motion of an object via application of a. 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. Work done by the force is equal to the product of the force and the displacement of the object in the direction of force.

In the international system of units the unit of power is the watt equal to one joule per second. What is work in physics definition formula units work energy and power. Work formula example of work types of energy power formula questions. Power work time or p w t.

The output power of a motor is the product of the torque that the motor generates and the angular velocity of its output shaft. W f s fs cos θ.