A force vecF = 3 hati - 2 hatj + 4hatk ...

A force `vecF = 3 hati - 2 hatj + 4hatk` displaces a body from a point A(8, -2, -3) to the point B(-2, 0,6). The work done is

1 unit

2 units

3 units

4 units

Text Solution

Verified by Experts

The correct Answer is:

`W = (3 hati - 2hatj + 4 hatk) . (-10 hatj + 2hatj + 9 hatk)`
`= - 30 - 4 = 36 = 2 ` units

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