Understanding the Work-Energy Theorem

In summary, work done is the energy transferred between two objects when they interact through forces. It can be calculated by multiplying the force applied by the distance moved in the direction of the force (W=F*Δs). This concept also applies to gas, where work done is equal to the pressure applied multiplied by the change in volume (W=p*ΔV). The concept of work is closely related to the Work-Energy Theorem, which states that when a force is applied to a body and it is displaced, work is done and energy is transferred.
  • #1
Daniel2244
125
5
Are the following definitions correct?

  • Work done as energy transferred
The energy transferred when the forces between two objects interact

  • Work done by a force
Work done = force x distance moved in the direction of force applied (W=F*Δs)

  • Work done by a gas
Work done = pressure x change in volume of gas (W=p*ΔV)
 
Last edited:
Physics news on Phys.org
  • #2
Did you just... I mean, you answered the 2nd and the 3rd question yourself.
 
  • #3
When a force is applied to a body and the body is displaced from its original position then work is done.

Work-Energy-Theorem.png

if you like to know about Work-Energy Theorem.
here are full details of Work-Energy Theorem
 

Attachments

  • Work-Energy-Theorem.png
    Work-Energy-Theorem.png
    755 bytes · Views: 358
  • Like
Likes Daniel2244

1. What is work done?

Work done is a measure of the energy transferred when a force is applied to an object and the object moves in the direction of the force.

2. How is work done calculated?

The formula for calculating work done is W = F x d, where W is work done, F is the force applied, and d is the displacement of the object.

3. What are the units of work done?

The units of work done are joules (J), which is the same as the units for energy.

4. Can work done be negative?

Yes, work done can be negative if the force applied and the displacement of the object are in opposite directions. This indicates that the object is losing energy.

5. How is work done different from power?

Work done is a measure of the energy transferred, while power is a measure of how quickly the energy is transferred. Power is calculated by dividing work done by time, and its units are watts (W).

Similar threads

B About verification on Kinetic energy and work
    • Mechanics
Replies
16
Views
1K
B Work done in lifting and lowering an object
    • Mechanics
Replies
34
Views
3K
I Work-Energy Theorem for Moving Block and Spring System?
    • Mechanics
Replies
4
Views
1K
I Does a person standing up on a swing in oscillatory motion do any work?
    • Mechanics
Replies
6
Views
815
Unraveling the Mystery of Work Done & Energy Transfer
    • Mechanics
Replies
20
Views
1K
B Work energy theorem by variable force
    • Mechanics
Replies
23
Views
1K
I Work Done/Energy Transferred in One Dimensional Collision
    • Mechanics
Replies
5
Views
858
A Calculate work done by a time-dependent pressure to a spherical hole
    • Mechanics
Replies
23
Views
1K
Work done by a constant Force: questions
    • Mechanics
Replies
3
Views
929
Why the work done is coming out to be positive?
    • Mechanics
Replies
9
Views
874

Hot Threads

Recent Insights

Back
Top