Name
Period
Date
Balanced Forces Worksheet 2
Force Diagrams with “Freebody”
In each of the following situations
1. Draw a system schema.
2. Complete the force diagram using the program “Freebody.”
3. Sketch the completed force diagram with the length of each arrow representing
the magnitude of the force. Be sure to appropriately label each arrow with the
type of force and to note the relative sizes of the various forces.
(i.e. FN  Fg , or FT  F fk etc.).
Exercise 1. A light string is used to suspend a rock from the ceiling so that it cannot move.
Exercise 2. Two light strings are used to tie a rock between two walls so that it cannot move.
Exercise 3: A person uses a rope to pull a box across a level surface with constant velocity.
(Note: the surface is NOT frictionless)
constant
velocity
Balanced Forces Worksheet 2: Force Diagrams with “Freebody”
page 2
Exercise 6: A person uses a rope to pull a box across a level surface. The box is speeding up.
(Note: the surface is NOT frictionless)
speeding up
Exercise 7: A girl is pulling her sled through the snow at constant speed. The rope makes an angle of 20° with
the horizontal.
constant
speed
Exercise 8: A boy throws a rock straight up into the air. Consider an instant when the rock has left the boy’s
hand on its way up but is not yet at the top of its flight.
rock
Exercise 9: A boy throws a rock straight up into the air. Consider an instant when the rock is at the top of its
flight and its velocity is zero.
rock