MAE 2101 Statics
Practice Exam #2
1. The Howe truss is subjected to the
loading shown. Identify any zero-force
members. Then determine the force in
members GF and CD, and state if the
members are in tension or compression.
2. Determine the internal normal force,
shear force and bending moment in the
beam at point B. Ignore the weight of the
bar itself.
3. Draw the shear and moment diagrams for
the beam subjected to the forces, moments
and loads shown. Denote the locations of
pertinent values on the diagrams (maxima,
minima, zeros, etc.)
R. Gist
1 of 2
Ver. B, Rev. 2
MAE 2101 Statics
Practice Exam #2
4. Determine the force P necessary to move
the 80-lb crate which has a center of gravity
at G. The coefficient of static friction at the
floor is μs=0.35. Will the crate tip or slip?
G
5. A rope attached to a wooden block passes
over a fixed wooden drum as shown. If the
block weighs 175 N, the coefficient of
static friction between the block and the
table is 0.25 and the coefficient of static
friction between the rope and the drum is
0.2, find the minimum tension, T, required
to move the block.
6. For the machine screw pictured, find the
moment required to start unscrewing the
screw which had previously been tightened
to exert a force of 1000 lb. Assume a
radius, r, of 1 inch, a lead of 2 threads per
0.5 inch, and a coefficient of static friction
of 0.4.
R. Gist
2 of 2
Ver. B, Rev. 2