The video introduces the work energy theorem provides the definition of the work energy theorem and provides the work energy theorem formula.
Work energy theorem in electrostatics.
In physics it means something else.
Work is the product of force and displacement in physics a force is said to do work if when acting there is a movement of the point of application in the direction of the force.
Electricity magnetism electrostatics.
W refers to the work done by the force f.
Where w g work done by gravity.
In more general systems than the particle system mentioned here work can change the potential energy of a mechanical device the heat energy in a thermal system or the electrical energy in an electrical.
The amount of energy transferred by a force is called the work done by that force.
For example when a ball is held above the ground and then dropped the work done on the ball as it falls is equal to the weight of the ball a force multiplied by the distance to the ground a displacement.
W g w n w f k f k i.
Also here the work done is the work done by all forces acting on the body like gravity friction external force etc.
W δke ke ke.
V f is the final velocity of an object measured using m s.
It turns out that kinetic energy and the amount of work done in the system are strictly correlated and their relation can be described by the work energy theorem.
Thus the work energy theorem states that.
In this lesson we revise different types of energy we define work as well as discuss the relationship between work and energy.
Actually energy is on.
Not that place you go to earn money.
Not like in the groovy sense.
In order to transfer energy to an object you ve got to exert a force on that object.
The work energy theorem can be derived from newton s second law.
V i is the initial velocity of an object measured using m s.
Electricity magnetism electromagnetism.
M is the mass of the object measured using kilograms.
In this live gr 12 physical sciences show we take a look at the work energy theorem.
It states that the work done by all external forces is converted into a change of kinetic energy.
Electricity magnetism electric circuits.
The formula to find the work done by a particular force on an object is w equals f d cosine theta.
W n work done by a normal.
Where w is the work done by object measured using joules.
