679357
41
Zoom out
Zoom in
Previous page
1/62
Next page
40
2. Pulleys can also be used to move
loads horizontally using a vertically
applied effort force. A downward pull
on a rope attached to a pulley system,
can move a clothesline horizontally.
Multiple pulleys and cables are found in
systems used to lift very heavy loads. A
multiple or compound pulley system is
called a block and tackle. Using multiple
pulleys amplifies the effort force still fur
ther so making the job of raising the very
heavy loads easier to do.
Why is it called a block and tackle? The
block is the frame that holds the pulleys
and the tackle is the rope or cable.
• Amplifytheappliedeffortforce
As more pulleys are used in a pulley
system, less effort is needed to move or
lift a load, but a longer amount of rope
must be pulled through the system. This
is the trade-off. Less effort is needed
but it is applied over a longer distance.
For example, in a system composed of 2
pulleys – one upper pulley that is fixed
and one lower, movable pulley – you only
need apply half the effort force that would
otherwise be needed to raise the load if
pulleys were not used. The distance you
must pull the rope, however, will be dou
ble the distance moved by the load.
Sailboats and yachts make much use of
these types of pulley systems to handle
and control large heavy sails.
A�Quick�Guide�to�Pulleys
Education
®
41


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Knex 78610 - Education Intro to Levers and Pulleys Teachers Guide at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Knex 78610 - Education Intro to Levers and Pulleys Teachers Guide in the language / languages: English as an attachment in your email.

The manual is 7,26 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

Others manual(s) of Knex 78610 - Education Intro to Levers and Pulleys Teachers Guide

Knex 78610 - Education Intro to Levers and Pulleys Teachers Guide Instructions - German - 62 pages

Knex 78610 - Education Intro to Levers and Pulleys Teachers Guide Instructions - Dutch - 62 pages

Knex 78610 - Education Intro to Levers and Pulleys Teachers Guide Instructions - French - 62 pages


The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info