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• Topic:

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A force $\stackrel{\to }{F\text{\hspace{0.17em}}}=6\stackrel{^}{i}+2\stackrel{^}{j}-3\stackrel{^}{k}$ acts on a particle and produces a displacement of $\stackrel{\to }{s\text{\hspace{0.17em}}}=2\stackrel{^}{i}-3\stackrel{^}{j}+x\stackrel{^}{k}.$ If the work done is zero, the value of x is

(1) – 2

(2) 1/2

(3) 6

(4) 2

PMT