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

PhysicsW.E.P.MiscellaneousEasy2 minPYQ_2022

PhysicsEasysingle choice

The kinetic energy $(E_{k})$ of a particle moving along $X$ -axis varies with its position $(X)$ as shown in the figure. The force acting on the particle at $X = 10 m$ is

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Answer:

Solution:

$\frac{d k}{d x} = \frac{d ( \frac{1}{2} m v ^{2} )}{d x} = \frac{1}{2} m \neq 2 v \frac{d v}{d x} = ma = F$ So, Force is slope at $x = 10 m F = - \frac{20}{4} = - 5 \hat{i}$

Stream:WBJEESubject:PhysicsTopic:W.E.P.Subtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2022

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