A shop board is hung using two strings. The tension in the strings are T₁ = 2î + 3ĵ and T₂ = −2î + 4ĵ. The total upward pull supporting the weight of the board is:
A shop board is hung using two strings. The tension in the strings are T₁ = 2î + 3ĵ and T₂ = −2î + 4ĵ. The total upward pull supporting the weight of the board is:
- A. 7ĵ
- B. 4î + 7ĵ
- C. ĵ
- D. 7î
Answer: A) 7ĵ
Explanation: Total upward force = T₁ + T₂ = (2î + 3ĵ) + (−2î + 4ĵ) = 0î + 7ĵ = 7ĵ.
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