PASCO SE-8685 Pulley Demonstration System - Manual (Page 8)

Pulley Demonstration System
8 ®
Suggested Experiments/Demonstrations
Experiment 1: Mechanical and Force Differences between a
Single Pulley and Double Pulley
* PASCO’s PASPORT sensors (with PS- prefix) require a PASPORT interface for operation.
PASCO’s ScienceWorkshop sensors (with CI- prefix) require a ScienceWorkshop
interface for operation.
Basic Procedure:
1. Set up a double pulley and a
single pulley each with a 200 g
mass.
2. Simultaneously, pull the string
of each from the same vertical
height down to the base.
3. Observe that the mass of the
single pulley rises twice as high
as the double pulley with twice
the effort or force.
4. Optional step: Measure the force
of each pulley using either two
Newton Spring scales or two
Force Sensors (See descriptions
a) and b) that follow).
Equipment required (without
computer): Optional equipment (for use with
computer interface):
Pulley Demonstration System
(SE-8685)
Two Force Sensors (CI-6746) or
(PS-2104)
Two Spring Scales (SE-8718) Computer Interface (1
ScienceWorkshop or 1-2 PASPORT)*
Measuring tape (PM-8761) DataStudio software
Figure 1.1: Single pulley vs.
double pulley