work done vs power
Power is the rate at which work is done measured in watts W in other words the work done per second. It is the worktime ratio.
Work Power And Energy Worksheet 7 1 Potential And Kinetic Energy Cpo Science Pages 1 29 Energy Transformations Potential Energy Kinetic And Potential Energy
Definition and Mathematics of Work.
. Power is defined as the amount of energy transferred in unit time. The work done is the product of the force applied to the object and the distance it has covered in the direction of the force. Power is the rate at which work is done.
But what confuses me is power. I hope that is correct so far. Work is determined by factors like force and displacement on contrary power is determined by work done and time.
Power is the rate of transfer of energy or the rate. W F. Is the capacity for doing work.
ADVERTISEMENT CONTINUE READING BELOW. Conservation of energy links GPE KE and work done. Work 1N x 10m 10J.
Work can also be measured in units like electron volt eV kWh MWh and GWh. The SI unit of power is the watt. Working is nothing but an energy which is used to do or create some change in something in physical state.
If I have say a 1kg mass and I want to accelerate it at 1ms2 for 10m I would calculate the work to be done as 10J. Scientifically Work done formula will be given as W F d. Or activity involving mental or physical effort done in order to achieve a result can be called as Work.
Work is measured in joules whereas power is measured in watts. Power is a scalar quantity. Lesson 1 - Basic Terminology and Concepts.
It exists in various forms like potential kinetic chemical thermal nuclear electrical energy and so. You must have energy to accomplish work - it is like the currency for performing work. This is usually represented as the product of force and displacement.
If the object does any work the value of the power cannot be zero. Work represents the amount of energy transferred when doing something. Power is the rate of energy consumed in a unit of time Power Work time.
It will be compulsory to mention here that if the energy conversion is taking place or the force is applied to the object and still no distance is covered by the object then no work is done. Difference Between Work and Power Work is defined as the process of energy transfer to the motion of an object through the application of force. This is easier to understand if you realize that Work Force x Distance.
Power is the rate at which work is done. Power is calculated by dividing the work done by the time it took to do the work. Power represents how fast the energy was transferred.
Work is the energy required to move an object whereas power is meant as the energy spent to move the object. In exercise its the rate of performing muscular work with potential energy becoming work aka moving weight or heat aka you getting warm. The SI unit of work is Joule.
Work is determined by factors like force and displacement on contrary power is determined by work done and time. Refers to an activity involving a force and movement in the directon of the force. Work done is the same as energy transferred.
Now the total work done by this force is equal to the product of the magnitude of applied force and the distance traveled by the body. Power is the rate of work done. The SI unit of work is Joules but the SI unit of power is Watt and Horsepower in case of motor vehicles or any machinery.
Power is the work done in a unit of time. For cos θ positive W positive For θ π2 W Zero For π2 θ 3π2 work is negative. For example if the engine of a car is working at a constant rate of 10kW the forward force generated is powervelocity 10 000 v where v is the velocity of the car the 10 was.
P W t Lets consider an example that can help illustrate the differences among work force and power. S Thus W F S cos θ Where F and S are the magnitude of force and displacement vectors and θ is the angle between them. Power Force Velocity.
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. A force of 20 newtons pushing an object 5 meters in the direction of the force does 100 joules of work. Power is worktime but how could I possibly alter the amount of time it takes for me to accelerate a mass for a.
To do 100 joules of work. In this case rate means per unit of time. Lesson 2 - The Work-Energy Relationship.
Mathematically it is computed using the following equation. An object can have a value for the power without doing any work. In this case the force exerting on the block is constant but the direction of force and direction of displacement influenced by this force is.
In fact work is the scalar product dot product of the force vector and the displacement vector. It turns out that. Force 1kg x 1ms2 1N.
Work is referred to as the displacement of an object when a force push or pull is applied to it while energy is referred to as the capacity to do the work. The standard metric unit of power is the Watt. Work is the outcome of force F and displacement S in the direction of force thus the equation can be written as Work done Force x displacement or W FS whereas power is the fraction of work and time worktime so the equation is written as Power Work done Time taken or P W t.
Calculating the Amount of Work Done by Forces. 1Power is the rate at which work is being done.
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