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A particle acted on by constant forces 4 i + j -3 k and 3 i + j - k to the point 5 i +4 j - k . The total work done by the forces is

Options

  1. A50 units
  2. B20 units
  3. C30 units
  4. D40 units

Correct answer

D. 40 units

Step-by-step solution

F + F ₁+ F ₂=7 i +2 j -4 k d = P V of B - P V of A =4 i +2 j -2 k W = F d =28+4+8=40 unit

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