Original Answer Needed
1. Define work.
2. Define energy.
3. Define kinetic energy.
4. Define potential energy.
Answers
Explanation:
Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy. While energy can be transferred or transformed, the total amount of energy does not change – this is called energy conservation.
Work:-
A force causing the displace of an object is defined as work.
It is the product of the component of force along the direction & magnitude of displacement.
✦W = (F cos θ) d = F. d
Where,
→W = work done by force.
→F = force
→d = displacement caused by force
→θ = Angle between the force vector & displacement vector.
Dimension :- [ML²T⁻² ].
Unit :- SI unit of work is joule (J)
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Energy:-
The capacity to do work is defined as energy.
Energy exists in several forms like heat energy,mechanical energy,light enery,kinetic energy , potential energy,etc.
Dimension:- [ML²T⁻² ].
Unit :- Joule (J)
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Kinetic Energy:-
The energy possessed by a body by virtue of it's motion is known as kinetic energy.
✦Kinetic energy(E) = 1/2 mv²
Where,
m = mass of body moving
v = velocity
✦Kinetic energy is always positive.
Examples of kinetic energy:
- Mechanical
- Thermal
- Sound
- Electrical
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Potential energy:-
The energy possessed by a body by virtue of its position is known as potential energy.
✦Potential energy(U) = mgh
Where,
m = mass
g= gravitational field
h = height
Examples of P.E :-
- Elastic potential energy
- Nuclear energy
- Raised weight
- Water stored behind the dam.
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