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Standard XII

Chemistry

Activation Energy

If U repres...

Question

If $U$ represents the potential energy of a system in one dimensional motion along $x$ axis, then $- \frac{d U}{d x}$ represents:

power

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force

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momentum

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work

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Solution

The correct option is A force
For a conservative force, the force is the gradient of the potential energy. i.e
$\to F = - \to \nabla U$

where $\nabla = \frac{d}{d x} + \frac{d}{d y} + \frac{d}{d z}$

In one dimensional along x-axis , $F_{x} = - \frac{d U}{d x}$

Thus, the given expression will represent the force.

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If U represents the potential energy of a system in one dimensional motion along x axis, then −dUdx represents:

The correct option is A forceFor a conservative force, the force is the gradient of the potential energy. i.e →F=−→∇U where ∇=ddx+ddy+ddzIn one dimensional along x-axis , Fx=−dUdxThus, the given expression will represent the force.

If $U$ represents the potential energy of a system in one dimensional motion along $x$ axis, then $- \frac{d U}{d x}$ represents: