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

PhysicsW.E.P.Conservative force & potential energyMedium3 minQB

PhysicsMediumsingle choice

What minimum speed does a 100 g particle need at point B to reach point A ? The graph shows potential energy versus position. (Motion is along x-axis only)

Options:

Answer:

Solution:

To just reach A, kinetic energy at B must equal the rise in potential energy: $\frac{1}{2} m v^{2} = U_{A} - U_{B}$ .

From the graph $U_{A} - U_{B} = 5 J$ and $m = 0.1 kg$ .

$v = 2 \times 5/0.1 = 10 m / s$

Answer: C

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

⏱ 3mℹ️ Source: QB

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