ITP
Mechanical Equilibrium and Forces (Ch. 2)
Free-Body Diagrams Practice
Name ___________________
Date _______ P ___ T____
Using graph paper and a straight edge, draw free-body diagrams for the
situations that follow.
 Give a title to the diagram
(Example: 1. Cart weighing 3 N at rest on table top)
 Consider the motion of the object and the forces involved.
 Label the vectors with the correct type of force using subscripts.
 Make sure that the vectors are to scale and mind the vector length.
1. A 0.5 N egg is freefalling from a nest in a tree. Diagram the forces acting on the
egg as it is falling.
2. A book weighing 8 N is at rest on a table top. Diagram the forces acting on the
book.
3. A gymnast weighing 450 N is suspended motionless from the gymnasium ceiling
by gripping the high bar with both hands. Diagram the forces acting on the
combination of girl and bar.
4. A skydiver weighing 600 N is accelerating downward. Net force = 400 N.
Diagram the forces acting upon the skydiver.
5. A rightward force of 20 N is applied to a book in order to move it across a desk
with a rightward acceleration. Net force = 15 N. Diagram the forces acting on
the book.
6. A rightward force of 15 N is applied to a book in order to move it across a desk at
constant velocity. Diagram the forces acting on the book.
7. A skydiver weighing 600 N is descending at terminal velocity. Diagram the forces
acting upon the skydiver.
8. A force is applied to the right to drag a sled across loosely-packed snow with a
rightward acceleration. Net force = 200 N. Diagram the forces acting upon the
sled.
9. A 2,500 N force causes a car weighing 5000 N to travel to the right at a constant
velocity. Diagram the forces acting upon the car.
10. A car weighing 5000 N is coasting to the right as it slows down. The net force at
this instant is 1550 N. Diagram the forces acting upon the car.