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Physics - W.E.P. Question with Solution | TestHub

PhysicsW.E.P.Conservative force & potential energyMedium2 minQB

PhysicsMediumsingle choice

Figure shows the (potential energy v/s position) U-x graph for a particle performing one-dimensional motion. Total mechanical energy is represented by dashed line. Choose INCORRECT statement :

Options:

Answer:

Solution:

Total energy $E$ is fixed, so $K E = E - U$ .

$K E = 0$ only at the turning points A and I, where the curve meets the dashed line.

At C, E, G the force $- d U / d x = 0$ (equilibrium), but $K E \neq = 0$ .

So 'KE is zero at C and G' is INCORRECT. Answer: (C)

Stream:JEESubject:PhysicsTopic:W.E.P.Subtopic:Conservative force & potential energy

⏱ 2mℹ️ Source: QB

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