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

PhysicsW.E.P.MiscellaneousEasy2 minPYQ_2020
PhysicsEasysingle choice

A body is displaced from(0,0)to(1 m,1 m)along the pathx=yby a forceF→=(yi^+x2j^) N, then the work done by the force is

Options:

Answer:
B
Solution:

W=∫(0,0)(1,1)F→.d→x

Hered→s=dxi^+ dyj^ + dzk^

∴W=∫(0,0)(1,1)(x2dy+ydx)

= ∫(0,0)(1,1)(x2dy+x.dx)

(Asx=y)

∴W=y33+x22(0,0)(1,1)=56J

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:W.E.P.Subtopic:Miscellaneous
⏱ 2mℹ️ Source: PYQ_2020

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