Physical Science Institute
Summer 2013
Free-Body Diagrams
In each of the following situations draw and label which, if any, of the following forces are acting on the object.
Make sure forces are drawn to a proper scale. Use the small dot provided to represent the object.
Forces: Fgravity, Ftension, Fnormal, Ffriction, Fpush
1. A small object lies motionless on a floor.
2. A small object hangs motionless from a rope.
Fnormal
Ftension
Fgravity
3. An object is sliding across a smooth floor (no
friction) at a constant speed.
Fgravity
4. An object is sliding to the right across a rough
floor with friction and slowing down.
Fnormal
Fnormal
Ffriction
Fgravity
5. An object is being pulled by a rope to the right
on a smooth floor (no friction).
Fgravity
6. An object is being pulled to the right by a rope on
a rough floor with friction at a constant speed.
Fnormal
Fnormal
Ffriction
Ftension
Ftension
Fgravity
Fgravity
7. An object is being pushed to the right on a
8. An object that has been tossed up into the air
rough surface with friction and accelerating to the just after it was released. (Ignore air resistance)
right.
Fnormal
Ffriction
Fpush
Fgravity
9. An object that has been tossed up into the air
at the very top of its trajectory.(Ignore air
resistance)
Fgravity
Fgravity
10. An object in the air falling to the floor with no
air resistance.
Fgravity