Physics / Unit 02 / BFPM

Practice 2: FBDs!5. In each of the following situations, represent the object with a labelled free body diagram. Label each force with a

meaningful symbol (ex: Fg) AND with the object exerting and experiencing the force the force (ex: ).!!

!!!from Modeling Workshop Project 2006 ! " 8

a. Object lies at rest!!!!!

b. Object slides at constant speed without friction. !

c. Object slows due to kinetic frictional force. ! d. Object slides without friction.!

e. Static frictional force prevents sliding. ! f. An object is suspended from the ceiling. !

g. The object is at rest. ! h. The object is pulled upward at constant speed.

Y / N

Y / NY / N

Y / N

Y / N

Y / N

Y / N

F

Y / N

Honors Physics / Unit 02 / BFPM

!

! " ! from Modeling Workshop Project 2006 9

i. The object is pulled by a force parallel to the surface.!!!j. The object is falling (no air resistance)!

k. The object is falling at constant (terminal) velocity. l. The ball is at the top of a parabolic trajectory. !

F

Y / N

Y / N

Y / N

Y / N