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5th Levers & Pulleys

5th Grade Levers and Pulleys

QuestionAnswer
A drawing that describes the relationship of all the parts of a system. Diagram
A _____ uses a system of symbols and conventions to communicate information about lever design. Diagram
The point at which a lever arm pivots. Fulcrum
The weight or resistance that is moved using a simple machine. Load
The force applied to move a load using a simple machine. Effort
Class 1 levers have the ________ in the middle and the load and the effort at the ends. Fulcrum
Class 2 levers have the ________ in the middle of the fulcrum and the effort at the ends. Load
Class 3 levers have the _______ in the middle and the fulcrum and load at the ends. Effort
Which lever class always gives advantage? Class 2
Which lever class never gives you advantage? Class 3
The F,L, and E stand for the part of hte lever system that is in the ______ of the lever. Middle
Any of the six basic devices that provide mechanical or other advantage, such as pulleys and levers Simple Machine
Two pulleys can provide greater ___________ than one when lifting loads. Mechanical advantage
_____ = Force x Distance Work
In a lever system and a pulley system, a ____ in effort is balanced by the distance over which the effort must act. Reduction
The benefits gained by using simple machines are always balanced by costs. When the benefits ________ the costs, the machine is a useful tool. Outweigh
a simple machine that people use to gain a mechanical advantage, such as making work easier lever
a stick or beam free to pivot at a point lever arm
effort is measured in _______ Newtons
in a lever system the _______ from the fulcrum the effort is applied, the ______ the advantage is to the lever user Farther easier
__________ shows relationship between two variables and can be used to make predictions two-coordinate graphs
_________ is a benefit obtain by using a lever (or other simple machine.) advantage
_____ is a wheel with a groove rim in which a rope can run to change the ________ of the pull (force) that lifts the load pully direction
_____ _____ has a wheel that is attached to something _____ ___ ____. fixed pully above the load
________ has a wheel that is attached to ______ movable pully the load
_______ ________reduces the effort needed to lift a load or overcome a resistance;it results from using a simple machine Mechanical advantage
_________ is a change in direction that results from passing a rope through a pulley Directional advantage
a single pulley can be set ups as a _____ pulley or a _______ pulley Fixed movable
Any of the 6 basic devices that provide a mechanical or other advantage, such as pulleys and levers Simple Machine
_____ pulleys can provide greater mechanical advantage than one when lifting loads two
the benefits gained by using simple machines are always balanced by _____ costs
when the benefits outweigh the costs, the machine is a _____ tool useful
in a lever system and a pulley system,a reduction in effort is balanced by the ________ over which the effort must act distance
Created by: mtmscomplab on 2011-03-10



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