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

PhysicsW.E.P.Calculation of workEasy2 minQB

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A force $F = (5 \hat{i} + 3 \hat{j} + 2 \hat{k}) N$ is applied over a particle which displaces it from its origin to the point $r = (2 \hat{i} - \hat{j}) m$ . The work done on the particle in joules is

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Answer:

Solution:

Work done, W $= F \cdot s$ Here $s = r_{f} - r_{i} = (2 \hat{i} - \hat{j})$ $W = (5 \hat{i} + 3 \hat{j} + 2 \hat{k}) (2 \hat{i} - \hat{j}) = 10 - 3 = 7 J$

Stream:JEESubject:PhysicsTopic:W.E.P.Subtopic:Calculation of work

⏱ 2mℹ️ Source: QB

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