Question

explain the concept work ,power & energy

Answer 1

Answer:

hey mate here is ur answer

Explanation:

Work, Energy and Power. Work can bedefined as transfer of energy. In physics we say that work is done on an object when you transfer energy to that object. ... The force is equal to the weight of the object, and the distance is equal to the height of the shelf (W= Fxd).

Answer 2

Answer:

Work can be defined as transfer of energy. In physics we say that work is done on an object when you transfer energy to that object. If one object transfers (gives) energy to a second object, then the first object does work on the second object.

Work is the application of a force over a distance. Lifting a weight from the ground and putting it on a shelf is a good example of work. The force is equal to the weight of the object, and the distance is equal to the height of the shelf (W= Fxd).

Work-Energy Principle --The change in the kinetic energy of an object is equal to the net work done on the object.

Energy can be defined as the capacity for doing work. The simplest case of mechanical work is when an object is standing still and we force it to move. The energy of a moving object is called kinetic energy. For an object of mass m, moving with velocity of magnitude v, this energy can be calculated from the formula E= 1/2 mv^2.

Types of Energy

There are two types of energy in many forms:

Kinetic Energy = Energy of Motion.

Potential Energy = Stored Energy.

Power is the work done in a unit of time. In other words, power is a measure of how quickly work can be done. The unit of power is the Watt = 1 Joule/ 1 second.

One common unit of energy is the kilowatt-hour (kWh). If we are using one kW of power, a kWh of energy will last one hour.

Calculating Work, Energy and Power

WORK = W=Fd

Because energy is the capacity to do work , we measure energy and work in the same units (N*m or joules).

POWER (P) is the rate of energy generation (or absorption) over time:P = E/t

Power's SI unit of measurement is the Watt, representing the generation or absorption of energy at the rate of 1 Joule/sec. Power's unit of measurement in the English system is the horsepower, which is equivalent to 735.7 Watts.

⚡Hope it will help you.⚡