Grade 12th passMechanics
Find w.d by the force 3i-2j+4k N carrying a particle -2m,1m,3m to point 3m , 6m, -2m
Find w.d by the force 3i-2j+4k N carrying a particle -2m,1m,3m to point 3m , 6m, -2m
1 Answer
Arun
Dear Arun
As we know
work done W = F . S
F and S are vector quantities hence its dot product gives us work done.
S = (5, 5, – 5)
now F .S = 15 – 10 – 20 = – 15 N
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