Question

The vector sum of two force p and Q is minimum when the angle 0 between their positive directions ,is

Answer 1

Answer:

∅ = π/2      

Explanation:

P + Q = √P² + Q² -2PQ Cos∅

          = √P² +Q²- 2PQ Cos π/2

          = √P² + Q²

This is the minimum value that the sum can have.

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