Question

A particle moves from point P(1, 2, 3) to Q(2, 1, 4) under the action of a constant force F= (2ỉ + j+K) N. Work
done by the force is​

Answer 1

Explanation:

Please refer to the above attachment for the answer

Answer 2

Explanation:

work done= F× s

F= 2i + j + k

s=final -intial

=2,1,4-(1,2,3)

= 2i+1j+4k-1i-2j-3k

= i- j + k

work done= f×s

= 2i + j + k × i - j +k

= 2-1+1

= 2

there fore, W.D. = 2 JOULES

Hope this helps ❤