Question

if f=(aî+3j-4k) and displacement d=(ai-0j+0k) find work done​

Answer 1

Since, work done = Force(f) * Dsplacement(d)

According To Question , we can apply dot product of vectors

Therefore,

Work done = ( a*a - 0 - 0 )

So, work done will be ,

${a}^{2}$

Hope it helps you