A boy of mass 1 kg moves from point A(2m,3m,4m) to B(3m,2m,5m). During motion of body, a force ${\bf{\vec F}} = \left( {2{\rm{N}}} \right)\hat i - \left( {4{\rm{N}}} \right)\hat j$ acts on it. The work done by the force on the particle displacement is

$\left( {2\hat i - 4\hat j} \right){\rm{J}}$

JEE PHYSICS MCQ: WORK-ENERGY-POWER

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Application +4 | -1

A boy of mass 1 kg moves from point A(2m,3m,4m) to B(3m,2m,5m). During motion of body, a force

\mathbf{\vec F} = \left( {2\mathrm{N}} \right)\hat i - \left( {4\mathrm{N}} \right)\hat j

acts on it. The work done by the force on the particle displacement is

View answer and explanation

Correct option: D

None of these

None of these is correct. The work done is calculated by taking the dot product of the force and displacement vectors, resulting in -2 J.

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