Question

In the equation y = A cos (ot - kx), what is the dimensional formula for K. o is angular
velocity, x is distance.​

Answer 1

Answer:

In the given equation y=Asin(ωt−kx)

Since, trigonometric function is a dimensionless quantity. So, (ωt−kx)is also dimensionless quantity.

So,

(ωt−kx)=1

ωt=1

[ω]=[T]1=[T]−1

kx=1

[k]=[L]1=[L]−1

Explanation:

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