Work Power And Energy Formulas Pdf

It is a scalar quantity.

Work power and energy formulas pdf. Power is the rate at which work is done or energy is transformed. 1 watt 1 joule second. Work done is generally referred in relation to the force applied while energy is used in reference to other factors such as heat. X k is the spring constant and x is the amount of compression or streching kinetic energy.

In the international system of units the unit of power is the watt equal to one joule per second. Free pdf download of physics class 11 chapter 6 work energy and power formula prepared by subject expert teacher at vedantu. In older works power is sometimes called activity. 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.

Work done by the force is equal to the product of the force and the displacement of the object in the direction of force. The unit of power is watt. Work power and energy are among the most important concepts of mechanics. H m is the mass g is the gravitational acceleration and h is the distance potential energy of the spring.

Dimensions of power linear momentum of an isolated system is always conserved in a collision. Work formula example of work types of energy power formula questions. 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. Work work done w is defined as the dot product of force f and displacement s.

Here θ is the angle between and. 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. Power is defined as work done per unit time.

Work done by the force is positive if the angle between force and displacement is acute 0 θ 90 as cos θ is positive. Power is a scalar quantity. This signifies when the force and displacement are in same. Revision notes on work power and energy.

In physics power is the amount of energy transferred or converted per unit time. Cbse class 11 physics work energy and power notes.