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• Topic:

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A force $\left(\stackrel{\to }{F}\right)=3\stackrel{^}{i}+c\stackrel{^}{j}+2\stackrel{^}{k}$ acting on a particle causes a displacement: $\left(\stackrel{\to }{s}\right)\text{\hspace{0.17em}}=-4\stackrel{^}{i}+2\stackrel{^}{j}+3\stackrel{^}{k}$ in its own direction. If the work done is 6 J then the value of ‘c’ is

(1) 0

(2) 1

(3) 6

(4) 12

PMT