(B) The work done $W$ by a conservative force $\vec{F}$ is related to the change in potential energy $V$ by the relation: $W = -\Delta V$. Given that

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(B) The work done $W$ by a conservative force $\vec{F}$ is related to the change in potential energy $V$ by the relation: $W = -\Delta V$. Given that the work done is positive $(W > 0)$,we have $-\Delta V > 0$,which implies $\Delta V Since $\Delta V = V_{final} - V_{initial} Therefore,the potential energy of the body decreases when a conservative force does positive work on it.

Class 11 Physics Work, Energy and Power Conservative and Non-Conservative forces and Potential Energy

Medium

When a conservative force does positive work on a body,

A
the potential energy increases
B
the potential energy decreases
C
total energy increases
D
total energy decreases

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Class 11

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Work, Energy and Power

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Conservative and Non-Conservative forces and Potential Energy

Conservative forces are defined as the force for which,

EasyTS EAMCET 2019

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$Assertion$ : Frictional forces are conservative forces.
$Reason$ : Potential energy can be associated with frictional forces.

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In the case of conservative forces,what physical quantity is represented by the negative value of the derivative of potential energy with respect to position?

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The potential energy for a force field $\vec{F}$ is given by $U(x,y) = \cos(x + y)$. The force acting on a particle at the position given by coordinates $(0, \frac{\pi}{4})$ is

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Write a few remarks on conservative forces.

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When a conservative force does positive work on a body,

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Conservative forces are defined as the force for which,

$Assertion$ : Frictional forces are conservative forces.$Reason$ : Potential energy can be associated with frictional forces.

In the case of conservative forces,what physical quantity is represented by the negative value of the derivative of potential energy with respect to position?

The potential energy for a force field $\vec{F}$ is given by $U(x,y) = \cos(x + y)$. The force acting on a particle at the position given by coordinates $(0, \frac{\pi}{4})$ is

Write a few remarks on conservative forces.

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$Assertion$ : Frictional forces are conservative forces.
$Reason$ : Potential energy can be associated with frictional forces.