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A block is displaced from (1m, 4m, 6m) t...

A block is displaced from `(1m, 4m, 6m)` to `(2hati+3hatj-4hatk) m` under a constant force `F=(6hati-2hatj + hatk) N`. Find the work done by this force.

Text Solution

Verified by Experts

The correct Answer is:
B
`W=F.S=F.(r_(f)-r_(i))`
`=(6hati + -2hatj + hatk).(2hati + 3hatj-4hatk)-(hati + 4hatj + 6^hatk)`
`=-2J`
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