Relation between work and change in energy.

Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
Sign up Log in
2 replies · 20K views
Caraniah
Messages
6
Reaction score
0
I'm confuse... What does it mean by saying, " change in energy"? What energy? Please help me... and explain. And no, this is not my homework... I'm doing my notes for physics.
 
Physics news on Phys.org
Work is the mechanical transfer of energy. If you do work on a system, you are transferring energy either to or from the system...with this, there is a change in energy of the system. There is potential energy and kinetic energy (two types of mechanical energy we will associate with for now classically). Kinetic energy is the energy of motion; when applying a force to an object, you are accelerating it, so you are changing its kinetic energy...this is what work measures: the change in mechanical energy...hence, work is an integral of the scalar product of force and distance covered.
If you're asking for a definition for energy...then it could get a bit complicated...
 
Last edited:
Gear300 said:
Work is the mechanical transfer of energy. If you do work on a system, you are transferring energy either to or from the system...with this, there is a change in energy of the system. There is potential energy and kinetic energy (two types of mechanical energy we will associate with for now classically). Kinetic energy is the energy of motion; when applying a force to an object, you are accelerating it, so you are changing its kinetic energy...this is what work measures: the change in mechanical energy...hence, work is an integral of the scalar product of force and distance covered.
If you're asking for a definition for energy...then it could get a bit complicated...

Thank u. Just exactly what i want...
 

Similar threads

Undergrad Relationship between work and force
  • sean39
  • · Replies 5 ·
  • Mechanics
Replies
5
High School What is the relation between Bernoulli's principle & Pascal?
  • Swapnil Daji PAtil
  • · Replies 7 ·
  • Mechanics
Replies
7
Graduate What is the relationship between work and energy in thermodynamics?
  • negation
  • · Replies 10 ·
  • Mechanics
Replies
10
High School Difference between Work and Energy?
  • jacket
  • · Replies 13 ·
  • Mechanics
Replies
13
Relation between Friction, Velocity, and Acceleration
  • steff-23
  • · Replies 16 ·
  • Introductory Physics Homework Help
Replies
16
Struggling to make relation between elastic force and height
  • renobueno4153
  • · Replies 11 ·
  • Introductory Physics Homework Help
Replies
11
High School Energy needed for electron's change in energy level in an atom
  • Nathi ORea
  • · Replies 15 ·
  • Quantum Physics
Replies
15
Calculating Work and Change in Thermal Energy
  • alyssad
  • · Replies 2 ·
  • Introductory Physics Homework Help
Replies
2
Undergrad What is the relationship between work and potential energy?
  • henpen
  • · Replies 1 ·
  • Mechanics
Replies
1
Undergrad What's the relation between spinor space and SO(3) vector space?
  • joneall
  • · Replies 53 ·
  • Quantum Physics
2
Replies
53