Question

A body constrained to move along the z-axis of co-ordinate system is subjected to a constant force F ⃗given by F = (-i+2 j+3k) Newton.
Calculate the Work done by the force in displacing the body through a distance of a 4m along the z-axis.
[[[Topic: Work, Energy and Power]]]

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Answer 1

Answer:

Given

F = −

i

^

+2

j

^

+3

k

^

N

Work done is given by,

W=

F

.

s

W=(−

i

+2

j

+3

k

).(4

k

)=12J

Hope will help u

Answer 2

F = − i^ +2 j^ +3 k^ N Work done is given by,W= F . s W=(− i +2 j +3 k ).(4 k )=12J