User's Manual

ME-9447B 012-13471A Introduction
®
3
Introduction
The Super Pulley Force Table includes equipment for vector addition experiments. You will also need masses,
mass hangers, and a balance..
This manual contains descriptions of the included equipment and instructions for one experiment.
About the Equipment
The PASCO Model ME-9447B Force Table is used to physically demonstrate the addition of vectors using the
concept of equilibrium (net force is zero). The vectors are forces supplied by the weight of masses (not included)
that hang over pulleys. Masses hanging over pulleys placed at given angles are balanced by another mass over a
pulley at another angle.
Among the features of the Force Table are:
• It is lightweight. (NOTE: Do not exceed 200 grams (0.20 kg) on each pulley.)
• It can be stored in a small space.
• The pulleys are low friction.
• The adjustable pulley clamps allow the string to be positioned close to the angle markings on the table, reduc-
ing the parallax error in reading the angle.
• Equilibrium is achieved when the String Tie Assembly is centered in the middle of the Force Table.
The Force Table has three detachable legs that can be stored in the leg holders and clips on the underside of the
table and the table includes spare String Tie Assemblies.
String Tie Assembly
The circular String Tie Assembly has two main parts: a clear disk
through which the strings are tied and which is free to move from side to
side over a short distance, and the outer part that snaps into the center of
the Force Table. The label on the outer part has a ring that shows when
the clear disk is centered.
Included Equipment Quantity Included Equipment Quantity
Force Table Assembly with Legs 1 String Tie Assembly 3
Super Pulley with Clamp 3 Spool of Thread 1
Required Equipment Recommended Equipment
Mass and Hanger Set (ME-8979) Mass Balance (see PASCO catalog)
Outer part snaps into
the Force Table
Clear
disk
Thread strings
through this hole.
Ring on
label