Question

a constant force acting on a particle of mass 2 kg is given by (f=2i cap +j cap-k cap)N. what is the work done by given force during motion of particle from point A (1m,1m,0) to point B (3m,4m,2m)
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Answer 1

Answer:

Work done is 5J

Explanation:

Formula for work done is given by w=f.s

Force is given by f=2i+j-k

Displacement from point A to B will be 2i+3j+2k

Work done=f.s=2*2(i.i)+1*3(j.j)-1*2(k.k)

w=4+3-2=5J

Hope it helps you..