1st ASSIGNMENT OF ENGINEERING MECHANICS
1. A force and couple are applied to beam.
a. Replace this system with a single force F applied at point G, and
determine the distance d.
b. Solve part (a) assuming that the directions of the two 600-N forces are
reversed.
2. The boom on a 4300-kg truck is used to unload a pallet of single of mass 1600 kg.
determine the reaction at each of the two:
a. Rear wheel, B
b. Front wheel, C.
3. Gears A and B are attached to a shaft supported by bearings at C and D. the
diameters of gears A and B are 150 mm and 175 mm, respectively, and the
tangential and radial forces acting on the gears are shown.
Knowing that the system rotates at a constant rate, determine the reactions at C
and D. assume that the bearing at C does not exert any axial force, and neglect the
weights of the gears and the shaft.
4. Determine the reactions at the beam supports for the given loading.