Mechanics
> Properties of Matter > Tensile and Compressive Strength
DCS#
1R20.20
ELASTICITY IN BARS
APPARATUS
two plastic meter sticks
101-05-F
weight holders
101-05-C
several 500-g masses
101-05-C
DESCRIPTION
Add weight to the center of a beam
supported at
its ends. Show how the deflection varies with weight and with the
distance
between the supports.
F = Y*(4ab3x)/L3,
where
F is the applied force, Y is young's modulus, L is the distance between
the supports, a is the width of the cross section, b is the length of
the
cross section, and x is the deflection of the midpoint.