NEET Class neet Answered
If the resultant forces inclined at 60° to each other is ✓3Q, what will be their resultant if they are inclined at 120° to each other.
Asked by brijk456 | 01 Aug, 2019, 09:58: AM
Expert Answer
Let direction of one of force coincide with the direction of x-axis,
so that this force F = |F| i and other force F = (|F|/2) i + ( √3 /2 ) |F| j
Resultant of two forces = (3/2) |F| i + ( √3 /2 ) |F| j and its square of magnitude = 3 |F|2 = 3 Q2
Hence magnitude of each force is Q units
If one of force making angle 120° with other, then this force F = -(1/2) |F| i + ( √3 /2 ) |F| j
Then resultant will be (1/2) |F| i + ( √3 /2 ) |F| j and its magnitude is |F| or Q
Answered by Thiyagarajan K | 01 Aug, 2019, 03:43: PM
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