1.

Three forces having magnitude 5,4 and 3 units act on a particle in the directions 2i - 2j + k, i + 2j + 2k and -2i + j - 2k respectively and the particle gets displaced from the point A whose vector is 6i - 2j + 3k to the point whose position vector is 9i + 7j + 5k. Then the work done by these forces is

Answer»

9 unit
43 unit
38 unit
38/3 unit

Answer :A


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