Question

Their are two force vectors, one of 5N and other of 12N . At which angle two vectors be added to get resultant of :-
1) 17N
2) 7N
3) 13N
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Answer 1

Answer:

1) 17 N ==> 0⁰ .

2) 7N ==> 180⁰ .

3) 13N ==> 90⁰ .

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some important cases :-

☆ R max. = A + B

angle = 0⁰. _______ case 1 .

☆ R min. = | A - B |

angle = 180⁰ . _______ case 2 .

☆ R max. = root A² + B²

angle = 90⁰ . _______ case 3 .

____________________________

from the above cases :-

1) 17 N = 0⁰ ( case 1 )

=> 12 + 5 = 17 .

=> angle = 0⁰

2) 7 N = 180⁰ ( case 2 )

=> | 12 - 5 | = 7 .

=> angle = 180⁰

3) 13 N = 90⁰ ( case 3 )

=> root 12² + 5² = 13 .

=> angle = 90⁰ .

Answer 2

Answer:

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