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Forces of magnitude 5 and 3 units acting...

Forces of magnitude 5 and 3 units acting in the directions `6hati+2hatj+3hatk` and `3hati-2hatj+6hatk` respectively act on a particle which is displaced from the point (2,2,-1) to (4,3,1) the work done by the forces is

A

148 units

B

148/7 units

C

78/7 units

D

none of the above

Text Solution

Verified by Experts

The correct Answer is:
B
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