Work Power And Energy Formulas Pdf

In older works power is sometimes called activity.

Work power and energy formulas pdf.

Dimensions of power linear momentum of an isolated system is always conserved in a collision. Power is defined as work done per unit time. Work done is generally referred in relation to the force applied while energy is used in reference to other factors such as heat. Power is a scalar quantity.

This signifies when the force and displacement are in same. In physics power is the amount of energy transferred or converted per unit time. Revision notes on work power and energy. Work work done w is defined as the dot product of force f and displacement s.

X k is the spring constant and x is the amount of compression or streching kinetic energy. The output power of a motor is the product of the torque that the motor generates and the angular velocity of its output shaft. A collision in which the total kinetic energy of the system is conserved is called elastic. It is a scalar quantity.

Work done by the force is positive if the angle between force and displacement is acute 0 θ 90 as cos θ is positive. Cbse class 11 physics work energy and power notes. H m is the mass g is the gravitational acceleration and h is the distance potential energy of the spring. Ek 1 2mv m is the mass v is the velocity work power energy exams and solutions.

A moving car walking up stairs lifting heavy objects an aeroplane flying etc are among the most common examples that give us insight into the concept of work power and energy. The unit of power is watt. Physics notes class 11 chapter 6 work energy and power work when a force acts on an object and the object actually moves in the direction of force then the work is said to be done by the force. In this article we will learn all about the concept of work power and energy.

Work done by the force is equal to the product of the force and the displacement of the object in the direction of force. Work power and energy are among the most important concepts of mechanics. 1 watt 1 joule second. Here θ is the angle between and.

Before moving to physics formula pdf sheet of chapter work energy power complete the theory form your text book than read the physics formula sheet of entrancei for effective revision do practice the questions from entrancei physics sections of chapter work energy power. Work formula example of work types of energy power formula questions.