- #1

Brown Arrow

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## Homework Statement

Use dimensional analysis to determine the dependence of the period T of

a simple pendulum on its mass m , weight w , length l and arc-length of

swing s.

## Homework Equations

g= [L/T

^{2}]

## The Attempt at a Solution

T =cst * m

^{a}l

^{b}g

^{c}s

^{d}

[T]=m

^{a}l

^{b}g

^{c}s

^{d}

=[M]

^{a}[L]

^{b}[g]

^{c}[L]

^{d}

okay im making a mistake here aren't I? by including the arc-Length? i do not know why i should not include it? some one explain? im a bit confused... after this I'll be able to go on.

then i will equate the exponents and solve it.

EDIT: Thanks in advance