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Physics: Are Unit vectors in the cordinate system the constant vectors? Physics: Are Unit vectors in the cordinate system the constant vectors?

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Old Monday, September 02, 2013
Rashid Dilshad's Avatar
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Default Physics: Are Unit vectors in the cordinate system the constant vectors?
Dear members,
Kindly answer to the given question (2013)
Are the unit vectors in the cylindrical and spherical coordinate system constant vector? Explain.

Pls also discuss what actually is the constant vertor. Thanks in advace
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Old Sunday, November 03, 2013
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Default your question is not the one they asked in 2013 anyways i 'll explain
the question in 2013 was
Are the unit vectors in cylindrical and spherical coordinate system constant vectors ? expalin .

the answer is
NO , they are not constant .


explanation ,
a vector is constant if
1. its magnitude is constant
2. its direction is constant

all unit vectors have a constant magnitude ie. 1
but to examine if their directions are constant we can use the derivative technique ( as we know that derivative of a constant is zero . so anything constant will generate a zero when we take its derivative )




[Source: Wikipedia]
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Old Monday, April 21, 2014
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Question
how to find magnitude of z-component of vector??
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