Question

6.11 A body constrained to move along the z-axis of a coordinate system is subject to a
constant force F given by
F=-i +2 j+3 K N
where i, j, k are unit vectors along the x-, y- and z-axis of the system respectively.
What is the work done by this force in moving the body a distance of 4 m along the
z-axis?​

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

I hope its help you.