F roe-Body Homework: Linear Motion In each case the object in the picture is acted on by one or more forces. All drawings are in a vertical plane, and friction is negligible except where noted. Draw accurate freebody diagrams showing all forces acting on the object shown. See LM-l. For convenience, you may draw all forces acting at the center of mass (center of the object), even though friction and normal force act at the point of contact with the surface. Label forces using the following notation from class: Fg = force of gravity, FT: tension force, FE: elastic/spring force, PM = normal force, Ff: friction force. Draw your forces DIRECTLY on the picture provided, just like LM-l. Please use a ruler or straight edge! LM - 1 Object is suspended from LM - 2 Static LM - 3 Static the ceiling. It'll"..- 5""..- 7"."" 2. Draw the tension vector along the string. 1. Draw arrow representing F = m g the weight. The free body diagram is made up only of these two vectors. LM - 4 Static LM 5 Object is motionless on (1 LM - 6 Object is motionless on a smooth surface smooth surface LM - 7 Object slides at a LM - 8 Object slides on a smooth LM - 9 Friction prevents sliding constant speed along a smooth (frictionless) surface (frictionless) surface 1.7/7 LM - 10 Object is falling. LM - 11 Object is pulled at LM - 12 Object is falling at No friction. constant (terminal) velocity. constant speed on rough surface LM - 13 An object is given a push LM - 14 A football is moving LM - 15 A tree has fallen across a and slides across a rough surface. upwards toward its peak after river, supported only on the having been punte banks, creating a bridge. LM - 16 Object tied to string and LM -17 Object is pulled by a rope LM - 18 Simple pendulum, |pulled straight up, at 9.8 m/s. through the air so that it moves with attached to the ceiling, is released a constant horizontal acceleration of from rest. g. No friction. 100 g