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Saturday, 15 December 2012

Q.No.2.3: - Vector A lies in the xy-plane. For what orientation will both of its rectangular components be negative? For what orientation will its components have opposite signs?


Q.No.2.3: - Vector A lies in the xy-plane. For what orientation will both of its rectangular components be negative? For what orientation will its components have opposite signs?
Ans: - In 1st quadrant x and y are both +ve. In 2nd x is –ve and y is +ve. In 3rd both x and y are
–ve. In 4th quadrant x is +ve and y is –ve. By using this consideration we can say that when vector
 A lies in 1st quadrant then both of its rectangular components will have same +ve signs when the vector A lies in 2nd quadrant then x component is –ve but y will be +ve. When A lies is 3rd quadrant then both components will have same negative signs and in the 4th quadrant the x and y will have opposite signs means x is +ve and y is –ve 

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