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mtje
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Homework Statement
rho of a hollow cylinder can be found with 4 measured quantity by the folowing formula, proof this formula
Homework Equations
ρ= 4.m∏.(d²-D²).h
d is the outside diameter and D the inside
The Attempt at a Solution
since it's my first time ever taking physics classes I'm kinda stuck
(well first time taking science classes)
ρ=m
V
so the formula of the hollow cylinder is V=∏.(d²-D²).h
the 4.m should be the mass but don't really get what the 4 is standing there for
Could someone explain me how i should solve this ore give me a helping hand with the beginning of it?