679357
59
Zoom out
Zoom in
Previous page
1/62
Next page
58
Work=ForcexDistancemovedbytheobjectinthedirectionoftheforce
or
W = F x d
If the force is measured in newtons (symbol N) and the distance is in metres (m) then the
work done (W) is measured in newton metres (Nm).
The SI unit of work is the joule (J) and 1joule=1newtonmetre.
FORCE
A force is a push or a pull which, when applied to an object, can make it change shape, move
fasterorslower,orchangedirection.Youcannotseeforcesbutyoucanfeelorseetheir
effects.
A force has both size and direction. The size of a force is measured in newtons (N) and can be
measured using spring balances called force meters or Newton meters.
EFFORT
The force you apply to move one part of a simple machine, i.e. the input force that is applied
to a simple machine, or mechanism, to make it do work. With a wheel and axle simple machine,
the effort force can be applied to either the wheel, or the axle, in order to make the other part
move. Think of a waterwheel being turned by a millstream or a car axle driving the road wheels.
The function of a simple machine, or mechanism, is to transfer the force both to the location
and in the direction in which it is needed to move the load.
LOAD
The weight of an object to be moved or the resistance that must be overcome before an
object can be moved.
The resistance can be the frictional forces in a mechanism itself or simply the friction between
two surfaces.
RESISTANCE
The force that works against the effort. It could be either the weight of the object to be moved
and/or frictional forces.
FRICTION
The force that occurs when two surfaces rub against each other. Friction tends to slow things
down, which means it can be both beneficial and unhelpful. For example: friction is beneficial in
the case of brakes applied to the wheels of cars and bicycles to slow them down, but friction
between surfaces can also cause wear - tyres wear out. Rough surfaces increase friction, while
smooth surfaces reduce it.
Frictionalsogeneratesheat.Youcanfeelthiswhenyourubyourhandstogetherquickly.
Key�Technical�Terms��
and�Scientific�Definitions
Education
®
59


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