Vernier Software and Technology
Vernier Software & Technology

Pulleys

Figure from experiment 21 from Physical Science with Vernier

Introduction

A pulley is a simple machine having a rope that passes over a grooved wheel. A fixed pulley is attached to a solid support and changes the direction of force. Resistance force, the weight of an object being lifted, is attached to one end of a rope going over a fixed pulley. Effort force is exerted on the other end of the rope.

A movable pulley moves along the rope with the resistance force, and the direction of the force is not changed. A pulley system may have a single pulley or a combination of pulleys. Pulleys are used to make work easier.

Objectives

In this experiment, you will

  • Use a Force Sensor to measure force.
  • Calculate actual mechanical advantage and ideal mechanical advantage.
  • Determine efficiency.
  • Make conclusions about pulley systems.

Sensors and Equipment

This experiment features the following Vernier sensors and equipment.

Option 1

Option 2

Option 3

Additional Requirements

You may also need an interface and software for data collection. What do I need for data collection?

Standards Correlations

See all standards correlations for Physical Science with Vernier »

Physical Science with Vernier

See other experiments from the lab book.

1Temperature Probe Response Time
2Boiling Temperature of Water
3Freezing and Melting of Water
4Evaporation of Alcohols
5Endothermic and Exothermic Reactions
6Neutralization Reactions
7Mixing Warm and Cold Water
8Heat of Fusion
9Energy Content of Fuels
10Energy Content of Foods
11Absorption of Radiant Energy
12An Insulated Cola Bottle
13A Good Sock
14Insolation Angle
15Solar Homes and Heat Sinks
16Conducting Solutions
17Conductivity of Saltwater: The Effect of Concentration
18Acid Strengths
19Frictional Forces
20First-Class Levers
21Pulleys
22An Inclined Plane
23Reflectivity of Light
24Polarizing Light
25How Bright is the Light?
26Electromagnets: Winding Things Up
27Magnetic Field Explorations
28Household Acids and Bases
29Acid Rain
30Gas Pressure and Volume
31Gas Temperature and Pressure
32Fun with Pressure
33Lemon "Juice"
34Simple Circuits
35Graphing Your Motion
36Speeding Up
37It's Race Day
38Crash Lesson
39Newton's Second Law
40Falling Objects

Experiment 21 from Physical Science with Vernier Lab Book

<i>Physical Science with Vernier</i> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

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