Question

What are conservative and non conservative forces?Explain?Give it's each of two properties?

Answer 1

Answer:

Conservative:the force that can"t change the total energy of the body just by doing work.

Ex: gravitational force,

Explanation:

non conservative forces:whi can change the total energy of the body.

Ex: friction ,

tangential force,

viscous drag.

Answer 2

$\large{\underline{\underline{\sf{Conservative\:forces-}}}}$

• It can always be expressed as negative of the gradient of the potential energy i.e $\sf{F\:=\:- \dfrac{-dU}{dr}}$.
• Work done by it is reversible.
• Work done is independent of the path of the body which is done by it. Also it depend upon starting and ending point.
• When the starting and end points are same, the total work is zero i.e, the work done in a round trip is zero.

$\large{\underline{\underline{\sf{Non\:conservative\:forces-}}}}$

• It has no relation with the potential energy.
• The work done by it is not reversible.
• The work done by it is not independent of the path of the body.
• When the starting and end points are same, the total work is not necessarily zero.

$\rule{200}2$